Destination guide
San Antonio weather by month
June to August is the strongest stretch for warm, mostly dry holiday weather in San Antonio, Spain. June's 27°C days suit travellers who want summer warmth without the highest temperatures; July and August reach around 30°C, making shade at midday more appealing. September is a useful alternative, with the sea still at 25°C but more rain than in summer. Spring suits time outdoors better than swimming, while winter calls for layers rather than beachwear.
The climate here is within a degree of Majorca, so if you are choosing between the two, the weather will not decide it for you.
- Hottest month
- 30.4°CAugust
- Coolest month
- 14.5°CJanuary
- Warmest sea
- 26.5°CAugust
- Flight from London
- 2 h 24 minShort-haul (up to 4.5 h) · estimated
San Antonio, month by month
Month-by-month detail pages exist for our most searched destinations; for San Antonio the 12-month table below carries the full picture.
A little perspective
San Antonio through the year
Every month at a glance; "best" marks our three top months on warmth, dryness and sunshine.
| Month | Day | Night | Sea | Sun/day | Rain mm | Rainy days | Days 25°C+ |
|---|---|---|---|---|---|---|---|
| January | 14.5°C | 10.2°C | 14.7°C | 5.5 | 32 | 6 | 0% |
| February | 14.7°C | 10.0°C | 14.1°C | 6.2 | 25 | 5 | 0% |
| March | 17.1°C | 11.4°C | 14.5°C | 7.0 | 22 | 4 | 0% |
| April | 19.3°C | 13.2°C | 15.8°C | 7.7 | 26 | 5 | 0% |
| May | 22.9°C | 16.1°C | 18.3°C | 8.7 | 21 | 3 | 23% |
| Junebest | 27.1°C | 19.8°C | 22.0°C | 11.1 | 7 | 2 | 79% |
| Julybest | 30.1°C | 22.7°C | 25.2°C | 12.3 | 3 | 1 | 99% |
| Augustbest | 30.4°C | 23.6°C | 26.5°C | 10.6 | 14 | 2 | 98% |
| September | 26.8°C | 21.4°C | 25.1°C | 7.6 | 43 | 5 | 76% |
| October | 22.8°C | 18.1°C | 22.4°C | 6.1 | 46 | 6 | 22% |
| November | 18.1°C | 14.1°C | 19.0°C | 5.3 | 48 | 7 | 0% |
| December | 15.4°C | 11.4°C | 16.1°C | 5.1 | 36 | 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.
When to go to San Antonio
For beach weather, look at months where the daytime average clears 25°C and rainy days stay low: June, July, August, September. November is the wettest month (48 mm, about 7 rainy days) and July the driest (3 mm). The sea is warmest in August at 26.5°C and coolest in February at 14.1°C.
Getting there
A direct flight from London Gatwick to Ibiza Airport (IBZ, 13 km from Sant Antoni de Portmany) takes roughly 2 h 24 min - short-haul (up to 4.5 h) by UK standards. Time-zone: Europe/Madrid.
Records and extremes, 1991-2020
The hottest day recorded in San Antonio between 1991 and 2020 reached 37.4°C on 7 July 2019; the coldest fell to 2.7°C on 4 February 2012. In August one day in ten tops 32.8°C and about 64% of days pass 30°C; in January one night in ten drops to 7.5°C or below. The wettest single month of the period was September 1996 with 194 mm, against a September average of 43 mm.
Sunrise, sunset and daylight in San Antonio
Local time on the 15th of each month; daylight-saving rules as of 2020.
| Month (15th) | Sunrise | Sunset | Daylight | Sunshine/day |
|---|---|---|---|---|
| January | 08:12 | 17:55 | 9.7 h | 5.5 h |
| February | 07:47 | 18:31 | 10.7 h | 6.2 h |
| March | 07:06 | 19:01 | 11.9 h | 7.0 h |
| April | 07:18 | 20:32 | 13.2 h | 7.7 h |
| May | 06:42 | 21:00 | 14.3 h | 8.7 h |
| June | 06:29 | 21:22 | 14.9 h | 11.1 h |
| July | 06:42 | 21:20 | 14.6 h | 12.3 h |
| August | 07:08 | 20:50 | 13.7 h | 10.6 h |
| September | 07:36 | 20:04 | 12.5 h | 7.6 h |
| October | 08:04 | 19:17 | 11.2 h | 6.1 h |
| November | 07:38 | 17:41 | 10.1 h | 5.3 h |
| December | 08:06 | 17:33 | 9.4 h | 5.1 h |
Winter into spring: comfortable outdoors, cool in the water
December and January are better suited to getting outdoors in layers than spending the day in swimwear. Daytime averages of 15°C in December and 14°C in January leave little room for expecting beach heat, while nights call for a jacket. February edges up to 15°C, but the sea is at 14°C, so swimming remains a chilly prospect. March brings 17°C days, making it more appealing for travellers who dislike heat, though evenings stay cool. April's 19°C days offer more scope for sitting outside, with a waterproof still useful. May is the clearest shift towards summer: days reach 23°C and rain becomes less frequent. The catch is the sea, still only 18°C, so choose May for comfortable daytime warmth rather than reliably comfortable swimming.
June to August: the strongest beach weather
June offers a useful balance: 27°C days, 20°C nights and a sea temperature of 22°C make it a strong choice for swimming without the highest daytime heat. July turns hotter, with 30°C days and 12 hours of sunshine, so leave exposed walks for the cooler parts of the day. It is also the driest month, although dry averages are not a guarantee of rain-free weather. August stays around 30°C and has the warmest sea at 26°C. Nights average 24°C, which can feel warm for sleeping; cooling in your accommodation matters more here than in spring. Pack light clothing, sun protection and something to cover up with at midday.
September to November: warm seas, then a wetter turn
September keeps much of summer's warmth, with 27°C days and a 25°C sea, making it particularly appealing if swimming matters more than the longest sunshine hours. The compromise is rain: September averages 5 rain days, so allow some flexibility for outdoor plans. October drops to 23°C by day, but the sea remains at 22°C, warmer than in May despite similar daytime temperatures. It suits travellers happy to mix swims with time out of the sun, with a light layer for evenings. November is a clearer change of season. Days average 18°C and it is the wettest month, so bring a waterproof and avoid planning every day around the beach.
A little more detail
San Antonio weather FAQs
Plain answers, grounded in the averages.
What is the best time to visit San Antonio?
Judged on warmth, low rainfall and sunshine, the best months in San Antonio are July, June and August. August is the hottest month (average high 30.4°C) and January the coolest (14.5°C).
How many months a year is San Antonio over 25°C?
4 months in San Antonio average a daytime high of 25°C or more, and 6 average 20°C or more.
When is the rainy season in San Antonio?
November is the wettest month in San Antonio (48 mm on average) and July the driest (3 mm). Annual rainfall averages 323 mm.
What is the hottest temperature recorded in San Antonio?
The hottest day recorded in San Antonio between 1991 and 2020 reached 37.4°C on 7 July 2019; the coldest fell to 2.7°C on 4 February 2012. Records come from daily data for 1991-2020, not from a single station's all-time history.
When is the sea warmest in San Antonio?
August has the warmest sea, averaging 26°C. July and September both average 25°C, so September remains a good swimming option after the hottest part of summer. October's 22°C sea also retains warmth, although rain is more frequent.
Is May or October better for a warm holiday?
Both average 23°C by day, but they suit different priorities. May has more sunshine and fewer rain days, making it better for outdoor plans. October has the warmer sea at 22°C compared with May's 18°C, so it has the edge for swimming.
Will I need warm clothes in winter?
Yes. Winter daytime averages sit around 14°C to 15°C, with nights around 10°C to 11°C. Bring layers and a jacket for evenings, plus a waterproof for showery weather. It is a mild-weather break rather than a dependable beach holiday.
See also: Spain weather by month · where else is hot in August
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 Sant Antoni de Portmany. Sea temperature from the nearest 5 km sea cell, 2.5 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