Your July weather guide
HotWeather in Costa Blanca in July
July is a good fit for Costa Blanca if you want hot weather, warm swimming water and little rain. Average daytime highs reach 30°C, nights stay around 22°C and the sea averages 25°C. The catch is that this is not gentle sightseeing weather: active days need some thought, and cool evenings are not something to rely on. Go then for a swim-led holiday, rather than long walks in the midday heat.
Long-term climate averages for Alicante, not a forecast · 1991-2020
Costa Blanca, month by month
Your snapshot
At a glance
The useful details for Alicante.
- Average daytime high
- 29.6°C
- 9 in 10 days stay below 32°C
- Average night-time low
- 21.8°C
- coldest 10% of nights: 20°C or lower
- Compared with London
- +7.8°C
- London averages 21.8°C in July
- Sea temperature
- 25.1°C
- year to year: 24°C to 26°C
- Sunshine per day (est.)
- 11.9h
- 83% of 14.4 h of daylight
- Rainy days (1 mm+)
- 1
- 6 mm over the month
- Humidity
- 66%
- Days over 25°C
- 98%
- 44% over 30°C
- Record high 1991-2020
- 40.9°C
- 1994-07-04
- Record low 1991-2020
- 15.5°C
- 1991-07-01
- Flight from London
- ≈ 2 h 30 min
- 1424 km, short-haul (estimate for a direct flight)
Records are observed extremes within 1991-2020, not typical holiday conditions. Warm-day percentages are shares of days, not day counts.
How July compares
July is the 2nd warmest month of the year in Costa Blanca. Within Spain it is 18th of 87 (Spain in July). Against London's average high of 21.8°C in July, Costa Blanca is 7.8°C warmer by day and 8.3°C warmer at night.
Daytime and night-time in July
The typical July day in Costa Blanca peaks at 29.6°C, but that is an average: the warmest 10% of days reach 32.2°C or more. About 98% of days top 25°C and 1 in 2 pass 30°C. Nights average 21.8°C; one night in ten drops to 19.7°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest July day here reached 40.9°C (1994-07-04) and the coldest night 15.5°C (1991-07-01).
Rain in July
Dry (3 rainy days or fewer): about 1 days with 1 mm or more, 6 mm in total. Year to year it varies a lot - the wettest July was 2009 with 42 mm, the driest 2007 with 0 mm. Humidity averages 66%.
Sea temperature in July
The sea averages 25.1°C - warm enough to swim (22°c+). Depending on the year it ranges from 24.1°C to 26.0°C. For the warmest sea here, come in August (26.4°C).
Sunshine and daylight
Around 11.9 hours of sunshine a day (estimated from cloud cover), 14.4 hours of daylight: the sun rises about 06:51 and sets about 21:25 local time in mid-July. Average cloud cover is 18%.
Is July a good time to visit Costa Blanca?
Yes - it is one of the better months: hot days, little rain and long sunny days. The best months for Costa Blanca on our scoring are July, June, August; months averaging 25°C or more: Jun, Jul, Aug, Sep.
Expect heat that lasts into the evening
The average high tells only part of the story: 44% of July days reach 30°C, so hotter afternoons are a regular possibility rather than an occasional surprise. Plan walking and anything energetic for the morning, leaving the middle of the day for shade, rest or a swim with breaks out of the sun. Loose, light clothing makes sense, along with a hat and sunscreen. Nights averaging 22°C mean you should not expect a sharp cool-down after dinner; air conditioning is a sensible accommodation priority if heat affects your sleep. July suits travellers who enjoy sustained warmth, but it is less comfortable if you prefer to stay active throughout the day.
Good swimming conditions, with little need for a rain plan
The sea averages 25.1°C, making swimming a comfortable prospect rather than a bracing commitment. Its year-to-year range of 24°C to 26°C also points to consistently warm water for this month. With about 11.9 hours of sunshine a day, there is plenty of scope to spend time outside without trying to fit everything around midday. Sun protection and access to shade deserve more attention in your packing and planning than wet-weather kit. July has about 1 rainy day, so rain is unlikely to dominate your stay, though a completely dry holiday is not guaranteed. Keep outdoor plans flexible, but there is little weather-based reason to build the trip around indoor alternatives.
A little perspective
Costa Blanca through the year
July is highlighted. See how it compares with the rest of the year.
| Month | Day | Night | Sea | Sun/day | Rain mm | Rainy days | Days 25°C+ |
|---|---|---|---|---|---|---|---|
| January | 15.0°C | 8.1°C | 14.6°C | 5.5 | 46 | 6 | 0% |
| February | 15.5°C | 8.3°C | 13.8°C | 6.2 | 35 | 6 | 0% |
| March | 17.6°C | 10.0°C | 14.3°C | 6.7 | 41 | 6 | 1% |
| April | 19.7°C | 11.9°C | 15.7°C | 7.3 | 43 | 6 | 3% |
| May | 22.7°C | 15.0°C | 18.3°C | 8.2 | 31 | 5 | 21% |
| Junebest | 26.9°C | 18.9°C | 22.0°C | 10.6 | 13 | 2 | 75% |
| JulySelectedbest | 29.6°C | 21.8°C | 25.1°C | 11.9 | 6 | 1 | 98% |
| Augustbest | 30.1°C | 22.5°C | 26.4°C | 10.0 | 17 | 3 | 98% |
| September | 26.9°C | 20.0°C | 24.9°C | 7.2 | 60 | 7 | 76% |
| October | 23.1°C | 16.4°C | 22.1°C | 6.0 | 60 | 7 | 25% |
| November | 18.5°C | 12.1°C | 18.9°C | 5.4 | 55 | 7 | 2% |
| December | 15.7°C | 9.2°C | 16.1°C | 5.0 | 48 | 6 | 0% |
Day = average daytime high, night = average night-time low, 1991-2020.Sun is hours per day; rainy days count 1 mm or more.
Day, night and sea
Monthly average temperatures, 1991-2020
- Day
- Night
- Sea
Best months here
On warmth, low rainfall and sunshine, start with these.
Keep exploring
Similar in July
Closest matches on daytime temperature, sea temperature and sunshine, in other countries.
A little more detail
Costa Blanca in July FAQs
Plain answers, grounded in the averages.
Is Costa Blanca hot in July?
Costa Blanca is hot in July: the average daytime high is 29.6°C and nights average 21.8°C. About 98% of July days reach 25°C or more.
Can you swim in the sea in Costa Blanca in July?
The sea around Costa Blanca averages 25.1°C in July, which is warm enough for most people to swim comfortably. Between 1991 and 2020 it ranged from 24°C to 26°C depending on the year.
How much does it rain in Costa Blanca in July?
Costa Blanca sees about 1 rainy days (1 mm or more) and 6 mm of rain in a typical July. The wettest July between 1991 and 2020 was 2009 (42 mm) and the driest was 2007 (0 mm).
How sunny is Costa Blanca in July?
Costa Blanca gets around 11.9 hours of sunshine a day in July out of 14.4 hours of daylight (estimated from average cloud cover).
How does Costa Blanca compare with the UK in July?
Costa Blanca is on average 7.8°C warmer than London by day in July (29.6°C against 21.8°C).
What is the hottest July on record in Costa Blanca?
Between 1991 and 2020 the hottest July day in Costa Blanca reached 40.9°C on 1994-07-04, and the coldest night dropped to 15.5°C on 1991-07-01.
How much hotter is Costa Blanca than London in July?
Costa Blanca's average daytime high is 29.6°C, compared with 21.8°C in London - a difference of 7.8°C. That is a noticeable step up in heat, so plan for regular shade breaks rather than treating it like a typical summer day at home.
Is it a short flight from London?
The flight from London is about 2 h 30 min, making Costa Blanca a short-haul option for hot July weather. The travel time is manageable, but the heat on arrival still calls for light clothing and water close at hand.
About these averages
ERA5-Land climate reanalysis via Open-Meteo (11 km grid) and NOAA Coral Reef Watch 5 km sea temperatures, 1991-2020
Averages computed from daily values at Alicante. Sea temperature from the nearest 5 km sea cell, 3 km from that point. Sunshine hours are estimated from average cloud cover.Records are the highest and lowest daily values in that 30-year period, not all-time records. These are climate averages, not a forecast for your trip. How we measure holiday weather
- Hot · 25°C+
- Warm · 20°C to below 25°C
- Mild · 15°C to below 20°C
- Cool · below 15°C