Your September weather guide
HotWeather in Valencia in September
September is a good choice for Valencia if you want hot days and a sea that is still warm enough for swimming, but not a guarantee of dry weather. Average highs are around 27°C, nights settle near 19°C and the sea averages about 25°C. For a UK traveller, that means summer clothing still earns its place in the suitcase, with a light layer and rain protection alongside it.
Long-term climate averages for Valencia, not a forecast · 1991-2020
Valencia, month by month
Your snapshot
At a glance
The useful details for Valencia.
- Average daytime high
- 27.1°C
- 9 in 10 days stay below 31°C
- Average night-time low
- 19.0°C
- coldest 10% of nights: 16°C or lower
- Compared with London
- +8.5°C
- London averages 18.6°C in September
- Sea temperature
- 24.9°C
- year to year: 24°C to 26°C
- Sunshine per day (est.)
- 7.0h
- 57% of 12.2 h of daylight
- Rainy days (1 mm+)
- 7
- 60 mm over the month
- Humidity
- 70%
- Days over 25°C
- 76%
- 15% over 30°C
- Record high 1991-2020
- 38.9°C
- 2016-09-04
- Record low 1991-2020
- 12.6°C
- 2007-09-28
- Flight from London
- ≈ 2 h 24 min
- 1298 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 Valencia and ranks 63rd of 134 destinations we compare for September - see where else is hot in September. Within Spain it is 11th of 87 (Spain in September). Against London's average high of 18.6°C in September, Valencia is 8.5°C warmer by day and 7.8°C warmer at night.
Daytime and night-time in September
The typical September day in Valencia peaks at 27.1°C, but that is an average: the warmest 10% of days reach 30.7°C or more. About 76% of days top 25°C and 1 in 6 pass 30°C. Nights average 19.0°C; one night in ten drops to 16.0°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest September day here reached 38.9°C (2016-09-04) and the coldest night 12.6°C (2007-09-28).
Rain in September
Some rain (4-8 rainy days): about 7 days with 1 mm or more, 60 mm in total. Year to year it varies a lot - the wettest September was 2019 with 194 mm, the driest 2013 with 4 mm. Humidity averages 70%.
Sea temperature in September
The sea averages 24.9°C - warm enough to swim (22°c+). Depending on the year it ranges from 23.8°C to 25.7°C. For the warmest sea here, come in August (26.4°C).
Sunshine and daylight
Around 7.0 hours of sunshine a day (estimated from cloud cover), 12.2 hours of daylight: the sun rises about 07:43 and sets about 20:11 local time in mid-September. Average cloud cover is 43%.
Is September a good time to visit Valencia?
Yes - it is one of the better months: hot days, manageable rain and long sunny days. The best months for Valencia on our scoring are July, June, August; months averaging 25°C or more: Jun, Jul, Aug, Sep.
Expect summer warmth, with some hotter days
Plan for warm-weather days rather than an autumn wardrobe. Light, breathable clothes make sense, and walking will generally be more comfortable away from the midday heat. Days reaching 30°C account for 15% of September, so anyone who dislikes heat should leave room for shade and relaxed afternoons rather than a packed outdoor schedule. Humidity averages 70%, which can make the warmth feel less comfortable when you are active. Evenings are usually mild enough for sitting outside, although a light jumper is sensible: the coldest nights can fall to 16°C or below. September suits travellers who still want heat, not those looking for reliably cool conditions.
Good swimming conditions, but keep plans flexible
The sea is a strong reason to choose September. Its average temperature of 24.9°C falls comfortably into swimming territory, so this is a sensible month if time in the water matters as much as time exploring the city. The catch is rain: there are about 7 rainy days during the month, enough that an entirely outdoor itinerary would be a gamble. That does not mean every rainy day is a washout, but it does mean keeping plans flexible and packing a light waterproof. Choose which days to spend by the sea using the forecast rather than assuming the whole stay will be dry. Warm water and occasional wet weather are both part of the September trade-off.
A little perspective
Valencia 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 | 15.0°C | 6.9°C | 14.0°C | 5.4 | 33 | 5 | 0% |
| February | 15.9°C | 7.1°C | 13.2°C | 6.2 | 27 | 5 | 0% |
| March | 18.5°C | 8.9°C | 13.8°C | 6.6 | 37 | 5 | 5% |
| April | 20.6°C | 11.2°C | 15.4°C | 7.1 | 42 | 6 | 10% |
| May | 23.8°C | 14.5°C | 18.4°C | 7.9 | 33 | 6 | 36% |
| Junebest | 27.9°C | 18.5°C | 22.2°C | 10.0 | 19 | 4 | 84% |
| Julybest | 30.4°C | 21.3°C | 25.3°C | 11.5 | 8 | 2 | 99% |
| Augustbest | 30.5°C | 21.8°C | 26.4°C | 9.5 | 22 | 4 | 97% |
| SeptemberSelected | 27.1°C | 19.0°C | 24.9°C | 7.0 | 60 | 7 | 76% |
| October | 23.3°C | 15.3°C | 22.0°C | 5.8 | 53 | 7 | 30% |
| November | 18.5°C | 10.9°C | 18.6°C | 5.4 | 46 | 6 | 3% |
| December | 15.5°C | 7.9°C | 15.6°C | 5.0 | 35 | 5 | 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.
A little more detail
Valencia in September FAQs
Plain answers, grounded in the averages.
Is Valencia hot in September?
Valencia is hot in September: the average daytime high is 27.1°C and nights average 19.0°C. About 76% of September days reach 25°C or more.
Can you swim in the sea in Valencia in September?
The sea around Valencia averages 24.9°C in September, 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 Valencia in September?
Valencia sees about 7 rainy days (1 mm or more) and 60 mm of rain in a typical September. The wettest September between 1991 and 2020 was 2019 (194 mm) and the driest was 2013 (4 mm).
How sunny is Valencia in September?
Valencia gets around 7.0 hours of sunshine a day in September out of 12.2 hours of daylight (estimated from average cloud cover).
How does Valencia compare with the UK in September?
Valencia is on average 8.5°C warmer than London by day in September (27.1°C against 18.6°C).
What is the hottest September on record in Valencia?
Between 1991 and 2020 the hottest September day in Valencia reached 38.9°C on 2016-09-04, and the coldest night dropped to 12.6°C on 2007-09-28.
How much warmer is Valencia than London in September?
Valencia's average daytime high is 27.1°C, compared with 18.6°C in London, a difference of 8.5°C. That is a substantial step up in warmth: pack mainly for summer days rather than copying what you would wear at home.
How sunny is Valencia in September?
September averages about 7 hours of sunshine within 12.2 hours of daylight. There is plenty of daylight for outdoor plans, but sunshine is not continuous. Sun protection still belongs in your day bag, even when the morning looks cloudy.
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 Valencia. Sea temperature from the nearest 5 km sea cell, 4.7 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