The summer nobody warned you about — Alicante

35 degrees in a poorly insulated flat with no AC is not a lifestyle. It is a problem.

Alicante gets more than 320 sunny days per year (Source: RelocateIQ research), and that number sells a lot of relocation decisions. What it does not tell you is what happens inside a poorly ventilated Spanish apartment in July when the temperature has been above 30 degrees for six consecutive weeks and the building was constructed before anyone considered insulation a priority. This article is about the physical reality of Alicante's climate — not the brochure version, but the version you will actually live in. It is written for UK professionals who have looked at the sunshine statistics and the rental prices and thought yes, but have not yet asked the follow-up questions about housing stock, heat management, and what winter actually feels like in a city that does not expect to need heating.

What the summer nobody warned you about actually looks like in Alicante

Why July and August in Alicante are genuinely demanding

Alicante's summer is not a warm British summer with better food. July and August regularly see daytime temperatures between 32 and 38 degrees, with nights that stay above 25 degrees in the city centre (Source: RelocateIQ research). The heat is dry rather than tropical, which makes it more bearable than coastal cities further south, but dry heat at 36 degrees is still 36 degrees. If you are working from home, cooking, or doing anything that generates additional warmth inside a flat, the interior temperature will exceed the exterior. That is the part people do not model when they are viewing apartments in April.

The city's urban core — particularly the older streets climbing toward the Castillo de Santa Bárbara — retains heat in its stone and concrete long after the sun goes down. Narrow streets that feel atmospheric in spring become heat traps in August. The port and marina area catches more sea breeze, which is a genuine quality-of-life variable worth factoring into your neighbourhood decision.

The housing stock problem that nobody puts in the listing

The majority of Alicante's older apartment buildings were constructed without meaningful thermal insulation, because for most of the year the climate does not demand it. A building that stays pleasantly cool in March and October can become genuinely uncomfortable in summer if it lacks AC and cross-ventilation. Modern developments — particularly those built after 2010 in districts like Playa de San Juan to the east — are more likely to include double glazing, better insulation, and pre-installed air conditioning units.

The practical split is roughly this: newer builds in the outer districts tend to be better equipped for summer; older apartments in the Casco Histórico and parts of Benalua tend not to be. Neither category is universally good or bad, but you need to ask specific questions before you sign a lease. Does the flat have AC? Is it a split unit or a portable unit? Which direction do the main windows face? South-facing apartments with no external blinds are the ones that will make you miserable in August.

What surprises people

The gap between outdoor temperature and indoor reality

Most people arriving from the UK calibrate their expectations to outdoor temperatures. Alicante's sea breeze and low humidity make 34 degrees feel manageable on the Explanada de España. Inside a top-floor apartment with south-facing windows and no AC, the same afternoon feels like something else entirely. The building absorbs heat through the day and releases it at night, which means the hottest point inside your flat is often around 10pm — precisely when you want to sleep.

This is not a niche problem. It is the standard experience in older Alicante housing stock, and it is the reason that air conditioning is not a luxury upgrade in this city — it is infrastructure.

What winter reveals about buildings designed for heat

Alicante's winters are mild by northern European standards, with average January temperatures around 12 to 17 degrees (Source: RelocateIQ research). That sounds fine until you are inside a flat with no central heating, single-glazed windows, and tiled floors in January. Spanish buildings in this climate zone were designed to stay cool, not warm. The same thermal mass that makes them sluggish to heat up in summer makes them slow to warm in winter. A portable electric heater in a poorly insulated flat is expensive and ineffective. Many relocators from the UK are genuinely caught off guard by how cold they feel indoors between December and February, despite the outdoor temperatures looking reasonable on paper.

The numbers

Alicante climate and cost context for relocating professionals

The numbers confirm what draws people to Alicante, but they do not capture the cost of retrofitting a poorly equipped flat for summer. A quality split-system air conditioning unit with installation runs €800 to €1,500 depending on the size of the space (Source: RelocateIQ research) — and in a rental, you will need landlord permission before you touch the walls. Budget for this before you arrive, not after your first August. The rental figures also reflect the off-peak market; summer short-let demand pushes coastal and port-adjacent rents significantly higher, which affects anyone on a rolling monthly contract rather than a fixed annual lease.

What people get wrong

Assuming the landlord has sorted the AC

The single most common mistake is signing a lease without confirming the air conditioning situation in writing. Listings in Alicante frequently describe apartments as having "air conditioning" when what they mean is a single portable unit in the living room that cannot cool a bedroom. Some listings describe ceiling fans as climate control. Before you commit to any rental in Alicante, visit in person if possible, ask specifically how many split-system units are installed and in which rooms, and get the answer in the contract. A flat with AC in the living room only is a flat where you will sleep badly from June through September.

Underestimating the Valencian sun on west-facing apartments

West-facing apartments in Alicante's central and southern districts receive direct afternoon sun from around 2pm until sunset. In summer, that means five to six hours of direct solar gain on your windows during the hottest part of the day (Source: RelocateIQ research). External blinds — persianas — are standard on most buildings and make a significant difference. If the apartment you are viewing does not have them, or if they are broken, factor in the cost of replacement. Internal curtains do almost nothing against afternoon sun at this latitude. Orientation is not a minor detail in Alicante; it is one of the most consequential variables in your daily comfort between May and October.

Treating mild winters as no-heating winters

The third mistake is arriving without a plan for January and February. Alicante does not get cold by UK standards, but a tiled apartment with no central heating and single glazing at 10 degrees overnight is uncomfortable in ways that accumulate. Most Alicante apartments rely on portable electric heaters or reversible AC units for winter warmth. Electric heating is expensive to run continuously. If the flat you are renting has a reversible split-system AC unit — one that heats as well as cools — that is genuinely useful. If it only has a portable oil radiator, budget for higher electricity bills than you expect.

What to actually do

Before you sign anything, do this

Visit the apartment you are considering at the hottest point of the day — early afternoon, ideally in late spring or summer. Check which direction the main living spaces face. Open every window and assess whether there is any cross-ventilation. Look for split-system AC units on the walls, not portable units on the floor. Ask the landlord or agent directly: how many rooms have AC, are the units owned or rented, and is the landlord willing to install additional units if needed. None of this is difficult, but it requires asking the questions before you are already committed.

If you are buying rather than renting, newer developments in Distrito 5 — Este, covering the Playa de San Juan area — are more likely to have been built to modern thermal standards. Older properties in the Casco Histórico can be retrofitted, but the cost and the landlord-permission question disappear when you own the building.

Making the climate work for you, not against you

Once you are in a well-equipped flat, Alicante's climate is genuinely one of its strongest assets. The rhythm of the city — late lunches, evening walks along the Explanada, outdoor dining until midnight — is built around avoiding the midday heat, and once you adopt that rhythm it feels natural rather than inconvenient.

Invest in good external blinds, a quality split-system unit for the bedroom, and a fan for the shoulder months when AC feels excessive. Learn which streets in your neighbourhood catch the sea breeze in the evening — in Alicante, this is local knowledge worth acquiring in your first month. The city rewards people who understand its climate rather than fighting it, and the difference between a miserable August and a manageable one is almost entirely about the flat you chose and the habits you built.

Frequently asked questions

How hot does Alicante get in summer?

Alicante's summer temperatures regularly reach 35 to 38 degrees Celsius during July and August, with overnight lows that frequently stay above 24 or 25 degrees in the city centre (Source: RelocateIQ research). The heat is predominantly dry rather than humid, which makes it more tolerable outdoors than comparable temperatures in coastal cities with higher humidity.

The more relevant figure for daily life is not the peak temperature but the sustained duration — Alicante's heat season runs from late May through to early October, which is a long time to be managing indoor temperatures without adequate cooling infrastructure.

The practical takeaway is that summer in Alicante is genuinely hot for an extended period, and any flat without functioning split-system AC in the bedroom will make that period harder than it needs to be.

Do flats in Alicante have air conditioning?

Many do, but the quality and coverage vary considerably. Newer developments — particularly in the Playa de San Juan area to the east — are more likely to have split-system units installed in multiple rooms as standard. Older apartments in the Casco Histórico and Benalua frequently have either a single unit in the living room or no fixed AC at all (Source: RelocateIQ research).

Always confirm in writing before signing a lease how many rooms have AC, what type of units they are, and whether the landlord will permit installation of additional units if needed.

A portable unit in the living room is not a substitute for a split-system in the bedroom. That distinction matters more than any other single factor in your summer comfort.

What is winter like in Alicante?

Alicante's winters are mild and predominantly dry, with average January daytime temperatures around 17 degrees and overnight lows around 7 to 10 degrees (Source: RelocateIQ research). Rain is concentrated in autumn and spring rather than winter, and snow is effectively unknown in the city itself.

The gap between outdoor and indoor comfort is the thing that catches UK arrivals off guard. A 10-degree night feels different inside a tiled, poorly insulated apartment with no central heating than it does in a well-insulated British house with a boiler.

December through February requires a heating plan. Most Alicante apartments use reversible AC units or portable electric heaters — know which your flat has before the temperature drops.

Does Alicante have central heating?

Central heating in the UK sense — a gas boiler feeding radiators throughout the flat — is uncommon in Alicante's residential stock. The city's climate historically did not require it, so it was rarely built in (Source: RelocateIQ research). Most apartments rely on reversible split-system AC units, portable electric heaters, or in some older buildings, gas heaters.

Reversible AC is the most practical solution and the most energy-efficient of the available options. If the flat you are considering has only portable electric heaters, factor in meaningfully higher electricity bills for the three winter months.

This is not a dealbreaker, but it is a variable worth understanding before you arrive expecting the same heating infrastructure you had in the UK.

How does the climate in Alicante affect daily life?

The climate shapes the daily rhythm of the city more than most relocators expect. The midday heat in summer means that outdoor activity, errands, and social life shift toward the morning and evening — a long lunch break is not a cultural quirk, it is a practical response to 36-degree afternoons (Source: RelocateIQ research).

For remote workers, this means structuring your working day around the heat rather than against it. Early morning calls with UK clients, a genuine break in the middle of the day, and productive evening hours are a natural fit with both the climate and the one-hour time difference.

The adjustment period is real but short. Most UK arrivals find the rhythm genuinely pleasant within a few weeks, provided their flat is adequately cooled.

Is Alicante humid in summer?

Alicante's summer humidity is relatively low compared to other Mediterranean coastal cities, which is one of the reasons the heat is more manageable outdoors than the raw temperature suggests (Source: RelocateIQ research). The city sits on a dry stretch of the southeastern coast, and the prevailing winds in summer tend to be warm and dry rather than moisture-laden.

Occasional humid episodes do occur, particularly in late summer and early autumn when sea temperatures are at their highest, but these are the exception rather than the pattern.

The practical implication is that sweating works — your body's cooling mechanism functions as it should, which makes outdoor life in Alicante's summer more bearable than equivalent temperatures in genuinely humid climates.

What should I know about housing insulation in Alicante?

Most of Alicante's older building stock was constructed with minimal thermal insulation, because the climate was considered mild enough not to require it (Source: RelocateIQ research). This creates a specific problem in both directions: buildings heat up slowly in summer but also cool down slowly, and they lose warmth quickly in winter.

Newer developments, particularly those built after 2010 in districts like Playa de San Juan, are more likely to meet modern thermal standards with double glazing and better wall insulation. If you are renting in the Casco Histórico or older parts of Benalua, assume the insulation is minimal and plan accordingly.

The single most effective mitigation in a rental is a quality split-system AC unit with a heating function — it addresses both the summer and winter insulation gaps without requiring any structural changes to the building.

How does the climate in Alicante compare to the UK?

The headline difference is scale: Alicante averages more than 320 sunny days per year against London's approximately 150 (Source: RelocateIQ research). Summer temperatures in Alicante are roughly double what a warm British summer produces, and the heat season lasts four to five months rather than a few weeks.

Winter is the more counterintuitive comparison. Alicante's winters are objectively milder than the UK's, but the indoor experience can feel colder because Spanish buildings in this climate zone were not designed to retain heat. A British house with central heating at 8 degrees outside is warmer inside than an Alicante apartment with no central heating at the same temperature.

The adjustment is not about tolerating worse conditions — it is about understanding a different set of conditions and equipping your home accordingly.