Your September weather guide
HotWeather in Andalucia in September
September is a good choice for Andalucia if you want warm days without relying on peak-summer heat. Average highs are around 26°C, with nights around 19°C, so light clothing should cover much of your stay. The catch is the sea: at 21.5°C, it is more bracing than comfortably warm. This month suits travellers who want time outdoors and can accept occasional rain, rather than those who need guaranteed heat and warm-water swimming.
Long-term climate averages for Seville, not a forecast · 1991-2020
Andalucia, month by month
Your snapshot
At a glance
The useful details for Seville.
- Average daytime high
- 26.3°C
- 9 in 10 days stay below 30°C
- Average night-time low
- 18.9°C
- coldest 10% of nights: 16°C or lower
- Compared with London
- +7.7°C
- London averages 18.6°C in September
- Sea temperature
- 21.5°C
- year to year: 20°C to 23°C
- Sunshine per day (est.)
- 8.3h
- 68% of 12.2 h of daylight
- Rainy days (1 mm+)
- 4
- 27 mm over the month
- Humidity
- 68%
- Days over 25°C
- 64%
- 12% over 30°C
- Record high 1991-2020
- 43.1°C
- 2016-09-05
- Record low 1991-2020
- 10.4°C
- 1994-09-25
- Flight from London
- ≈ 2 h 42 min
- 1597 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 September compares
September is the 4th warmest month of the year in Andalucia. Within Spain it is 33rd of 87 (Spain in September). Against London's average high of 18.6°C in September, Andalucia is 7.7°C warmer by day and 7.7°C warmer at night.
Daytime and night-time in September
The typical September day in Andalucia peaks at 26.3°C, but that is an average: the warmest 10% of days reach 29.5°C or more. About 64% of days top 25°C and 1 in 8 pass 30°C. Nights average 18.9°C; one night in ten drops to 16.4°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest September day here reached 43.1°C (2016-09-05) and the coldest night 10.4°C (1994-09-25).
Rain in September
Some rain (4-8 rainy days): about 4 days with 1 mm or more, 27 mm in total. Year to year it varies a lot - the wettest September was 2008 with 107 mm, the driest 2011 with 0 mm. Humidity averages 68%.
Sea temperature in September
The sea averages 21.5°C - bracing (18-22°c). Depending on the year it ranges from 20.3°C to 22.7°C. For the warmest sea here, come in August (23.0°C).
Sunshine and daylight
Around 8.3 hours of sunshine a day (estimated from cloud cover), 12.2 hours of daylight: the sun rises about 08:06 and sets about 20:32 local time in mid-September. Average cloud cover is 32%.
Is September a good time to visit Andalucia?
Yes - it is one of the better months: hot days, manageable rain and long sunny days. The best months for Andalucia on our scoring are July, August, June; months averaging 25°C or more: Jun, Jul, Aug, Sep.
Warm enough for summer clothes, with some hotter days
Pack mainly for warm weather, but leave room for a light layer. Days reach 25°C on 64% of occasions, making September a reasonable bet for spending time outside in short sleeves. Stronger heat is still possible: 12% of days reach 30°C, so keep plans flexible and take a shaded break around midday when it feels hot. Nights average 18.9°C, which supports eating or sitting outdoors, though comfort will depend on your tolerance for cooler air. The coldest nights can fall to 16.4°C or below, so a cardigan or light jacket is more useful than a suitcase packed solely for high summer.
Good daylight for outdoor plans, but a cooler sea
The sea is the main reason to temper expectations of a summer-style holiday. Its September average is 21.5°C, which feels bracing rather than reliably warm for swimming. The year-to-year range runs from 20°C to 23°C, so your experience may differ from the average. If you enjoy a refreshing dip, that could suit you; if you prefer lingering in warm water, it is less convincing. Away from swimming, about 8.3 hours of sunshine within 12.2 hours of daylight gives you scope to spend time outdoors without packing everything into midday. Keep sun protection handy, and judge swimming comfort separately from how warm the air feels.
A little perspective
Andalucia through the year
September 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 | 14.8°C | 8.4°C | 15.2°C | 5.2 | 60 | 8 | 0% |
| February | 15.6°C | 8.8°C | 14.8°C | 6.0 | 52 | 7 | 0% |
| March | 17.5°C | 10.3°C | 15.2°C | 6.3 | 59 | 7 | 2% |
| April | 19.2°C | 11.9°C | 15.9°C | 7.4 | 46 | 7 | 5% |
| May | 22.4°C | 14.7°C | 17.3°C | 8.7 | 28 | 5 | 21% |
| Junebest | 26.5°C | 18.3°C | 19.4°C | 11.4 | 8 | 1 | 64% |
| Julybest | 29.6°C | 20.9°C | 21.7°C | 12.8 | 1 | 0 | 93% |
| Augustbest | 29.7°C | 21.4°C | 23.0°C | 11.2 | 4 | 1 | 96% |
| SeptemberSelected | 26.3°C | 18.9°C | 21.5°C | 8.3 | 27 | 4 | 64% |
| October | 22.3°C | 15.7°C | 19.4°C | 6.0 | 64 | 7 | 18% |
| November | 18.0°C | 11.8°C | 17.3°C | 5.4 | 74 | 7 | 1% |
| December | 15.6°C | 9.7°C | 15.9°C | 4.7 | 79 | 8 | 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 September
Closest matches on daytime temperature, sea temperature and sunshine, in other countries.
Portugal · 26°C by day · sea 21°C
Algarve
Italy · 26°C by day · sea 24°C
Sardinia
Mauritius · 26°C by day · sea 24°C
Flic en Flac
Portugal · 28°C by day · sea 21°C
Albufeira
Albania · 26°C by day · sea 24°C
Saranda
A little more detail
Andalucia in September FAQs
Plain answers, grounded in the averages.
Is Andalucia hot in September?
Andalucia is hot in September: the average daytime high is 26.3°C and nights average 18.9°C. About 64% of September days reach 25°C or more.
Can you swim in the sea in Andalucia in September?
The sea around Andalucia averages 21.5°C in September, which is bracing - fine for a quick dip, cool for long swims. Between 1991 and 2020 it ranged from 20°C to 23°C depending on the year.
How much does it rain in Andalucia in September?
Andalucia sees about 4 rainy days (1 mm or more) and 27 mm of rain in a typical September. The wettest September between 1991 and 2020 was 2008 (107 mm) and the driest was 2011 (0 mm).
How sunny is Andalucia in September?
Andalucia gets around 8.3 hours of sunshine a day in September out of 12.2 hours of daylight (estimated from average cloud cover).
How does Andalucia compare with the UK in September?
Andalucia is on average 7.7°C warmer than London by day in September (26.3°C against 18.6°C).
What is the hottest September on record in Andalucia?
Between 1991 and 2020 the hottest September day in Andalucia reached 43.1°C on 2016-09-05, and the coldest night dropped to 10.4°C on 1994-09-25.
Is rain likely to disrupt a September holiday?
Some rain is possible, but it is not the dominant feature: September averages about 4 rainy days. Keep an indoor alternative for wet spells and pack a light waterproof. That average is not a promise of how rain will fall during your stay.
How much warmer is Andalucia than London in September?
Andalucia's average daytime high is 26.3°C, compared with London's 18.6°C - a difference of 7.7°C. That makes it a clear step up in warmth for a UK traveller, though you should still bring a light layer for cooler evenings.
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 Sevilla (Seville). 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