Your December weather guide
MildWeather in Costa Adeje in December
Costa Adeje is a good December choice for mild days rather than a hot beach holiday. Average highs of 20°C make outdoor time appealing, while nights around 15°C call for an extra layer. The sea averages 21°C, so swimming is likely to feel bracing rather than comfortably warm. For a UK traveller, it suits a change from winter chill, provided you are happy with some rain and do not expect summer heat.
Long-term climate averages for Adeje, not a forecast · 1991-2020
Costa Adeje, month by month
Your snapshot
At a glance
The useful details for Adeje.
- Average daytime high
- 19.5°C
- 9 in 10 days stay below 22°C
- Average night-time low
- 15.2°C
- coldest 10% of nights: 13°C or lower
- Compared with London
- +11.8°C
- London averages 7.7°C in December
- Sea temperature
- 21.0°C
- year to year: 21°C to 22°C
- Sunshine per day (est.)
- 5.6h
- 55% of 10.2 h of daylight
- Rainy days (1 mm+)
- 7
- 58 mm over the month
- Humidity
- 75%
- Days over 25°C
- 0%
- none over 30°C
- Record high 1991-2020
- 25.6°C
- 2019-12-27
- Record low 1991-2020
- 8.9°C
- 2017-12-27
- Flight from London
- ≈ 4 h 24 min
- 2911 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 December compares
December is the 10th warmest month of the year in Costa Adeje. Within Spain it is 22nd of 87 (Spain in December). Against London's average high of 7.7°C in December, Costa Adeje is 11.8°C warmer by day and 12.5°C warmer at night.
Daytime and night-time in December
The typical December day in Costa Adeje peaks at 19.5°C, but that is an average: the warmest 10% of days reach 21.7°C or more. Roughly 1 in 333 days top 25°C. Nights average 15.2°C; one night in ten drops to 13.0°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest December day here reached 25.6°C (2019-12-27) and the coldest night 8.9°C (2017-12-27).
Rain in December
Some rain (4-8 rainy days): about 7 days with 1 mm or more, 58 mm in total. Year to year it varies a lot - the wettest December was 1991 with 184 mm, the driest 2011 with 2 mm. Humidity averages 75%.
Sea temperature in December
The sea averages 21.0°C - bracing (18-22°c). Depending on the year it ranges from 20.6°C to 21.6°C. For the warmest sea here, come in September (23.7°C).
Sunshine and daylight
Around 5.6 hours of sunshine a day (estimated from cloud cover), 10.2 hours of daylight: the sun rises about 07:51 and sets about 18:13 local time in mid-December. Average cloud cover is 45%.
Is December a good time to visit Costa Adeje?
December is not the strongest month here: mild days. The best months for Costa Adeje on our scoring are July, August, September; months averaging 25°C or more: Jul, Aug, Sep.
Comfortable days, but pack for cooler evenings
December suits travellers who prefer being outdoors without strong heat. Even the warmer days tend towards mild warmth: the warmest 10% reach 22°C or more. Think light clothes for warmer spells, with a jumper or light jacket ready for later. The coldest 10% of nights fall to 13°C or below, so packing only beachwear would leave you short. You get about 5.6 hours of sunshine within 10.2 hours of daylight, which leaves room for relaxed outdoor plans but does not promise clear skies throughout the day. Make the warmer middle of the day your preferred time for sitting outside, rather than relying on warm evenings.
Keep beach plans flexible
The catch is that December is not reliably dry, and the water is cooler than you might want for long swims. There are about 7 rainy days, enough to make a light waterproof useful and to favour flexible plans over a holiday built entirely around the beach. That does not mean rain will fill each affected day, but dry weather should not be taken for granted. At 21°C, the sea falls in the bracing range: it may suit you if you enjoy cooler water, but it is not the best fit if swimming comfort is your priority. Keep something dry and warm handy for after a dip, especially if you plan to stay outside afterwards.
A little perspective
Costa Adeje through the year
December 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 | 18.5°C | 13.9°C | 19.9°C | 6.2 | 27 | 5 | 0% |
| February | 18.7°C | 14.0°C | 19.3°C | 7.0 | 39 | 5 | 2% |
| March | 19.6°C | 14.6°C | 19.2°C | 7.5 | 30 | 5 | 4% |
| April | 20.1°C | 15.1°C | 19.5°C | 8.1 | 23 | 4 | 5% |
| May | 21.5°C | 16.3°C | 20.2°C | 9.3 | 6 | 2 | 10% |
| June | 23.5°C | 18.1°C | 21.3°C | 11.4 | 3 | 1 | 21% |
| Julybest | 26.3°C | 20.4°C | 22.1°C | 12.2 | 0 | 0 | 60% |
| Augustbest | 26.9°C | 21.2°C | 23.0°C | 11.2 | 3 | 1 | 73% |
| Septemberbest | 25.3°C | 20.2°C | 23.7°C | 8.8 | 9 | 2 | 49% |
| October | 23.7°C | 19.1°C | 23.6°C | 6.7 | 26 | 5 | 23% |
| November | 21.5°C | 17.1°C | 22.5°C | 5.6 | 30 | 6 | 9% |
| DecemberSelected | 19.5°C | 15.2°C | 21.0°C | 5.6 | 58 | 7 | 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 December
Closest matches on daytime temperature, sea temperature and sunshine, in other countries.
A little more detail
Costa Adeje in December FAQs
Plain answers, grounded in the averages.
Is Costa Adeje hot in December?
Costa Adeje is mild in December: the average daytime high is 19.5°C and nights average 15.2°C. Roughly 1 in 333 December days reach 25°C.
Can you swim in the sea in Costa Adeje in December?
The sea around Costa Adeje averages 21.0°C in December, which is bracing - fine for a quick dip, cool for long swims. Between 1991 and 2020 it ranged from 21°C to 22°C depending on the year.
How much does it rain in Costa Adeje in December?
Costa Adeje sees about 7 rainy days (1 mm or more) and 58 mm of rain in a typical December. The wettest December between 1991 and 2020 was 1991 (184 mm) and the driest was 2011 (2 mm).
How sunny is Costa Adeje in December?
Costa Adeje gets around 5.6 hours of sunshine a day in December out of 10.2 hours of daylight (estimated from average cloud cover).
How does Costa Adeje compare with the UK in December?
Costa Adeje is on average 11.8°C warmer than London by day in December (19.5°C against 7.7°C).
What is the hottest December on record in Costa Adeje?
Between 1991 and 2020 the hottest December day in Costa Adeje reached 25.6°C on 2019-12-27, and the coldest night dropped to 8.9°C on 2017-12-27.
How much warmer is Costa Adeje than London in December?
The average daytime high is 19.5°C, compared with 7.7°C in London, a difference of 11.8°C. That is a substantial step up for outdoor comfort, though Costa Adeje still offers mild winter weather rather than dependable beach heat.
How long is the flight from London?
The flight from London takes about 4 h 24 min, making Costa Adeje a short-haul option for milder December weather. The trade-off is the temperature: choose it for comfortable days, not for a guarantee of hot conditions.
Is December the best month to go for warmth?
No. December is towards the cooler end of Costa Adeje's year. July, August and September are the stronger choices overall on weather. December makes more sense if you prefer mild conditions and can accept some rain and bracing sea temperatures.
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 Adeje. Sea temperature from the nearest 5 km sea cell, 4.8 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