SeasonMapTossa de Mar (Costa Brava) weather in September
Spain
September in Tossa de Mar: warm, rainy, with clean air — an excellent time to visit.
#4 of 12 months in Tossa de Mar · #341 of 1383 destinations to visit in September · comfort 88/100 (tier A)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Tossa de Mar in September
Notes from nearby Barcelona (74 km away)
Tossa de Mar doesn't have its own notes for September yet — these are about Barcelona, close enough to share the season.
September is when Barcelona's sea is at its best — the forum is unanimous that the Mediterranean is at its warmest now and into October, around 25°C, warmer than it manages at any point in summer. The air is a different story across the month: the opening days can push near 30°C, hot enough that regulars say sightseeing stops being enjoyable, while late September settles into the low-to-mid 20s and is the better bet. One practical catch — the city's outdoor public pools mostly close during September, some by mid-month, so the beach is the dependable option.
Add your own note from Tossa de Mar's card on the map.
Tossa de Mar climate normals — September
| Daytime high | 26°C / 79°F | 🌤 warm |
|---|---|---|
| Nighttime low | 19°C / 65°F | |
| Sea temperature | 25°C / 76°F | 🙂 pleasant |
| Rainfall | 86 mm / 3.4 in | 🌧 rainy |
| Rainy days | 12 days | |
| Humidity | 72% | 💧 humid |
| Dew point | 17°C / 62°F | |
| Sunshine | 10.2 h/day | |
| Daylight | 12.5 h | |
| Wind | 13 km/h / 8 mph | |
| Air quality (US AQI) | 48 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Tossa de Mar in September
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Peak crowdsResort season opens, Summer holidays in Spain, school holidays in 2 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Tossa de Mar's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherTossa de Mar's weather peaks June–August, best around July.
Best weatherFair weatherToughest weather
What's on in Tossa de Mar in September
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Resort season opens
1 Apr – 15 Oct · usuallySummer season opensCrowdedHotels, the coastal boats to Lloret and Sant Feliu, and the restaurants under the Vila Vella walls all open around Easter and shut again in October. The town runs entirely on that calendar.
- Season
Jellyfish arrivals
15 Jun – 15 Sep · usuallyInsect seasonOnshore winds push swarms of mauve stingers into the Costa Brava coves for a few days at a time in summer, and the beach flags go purple when they are in. It passes as soon as the wind turns.
- Season
Sea warm enough
20 Jun – 5 Oct · usuallyThe coves either side of the headland are clear and sheltered and hold their warmth into early October. June water is still cool; September is the best of it with half the people.
Nearby, and something's on
Within 300 km of Tossa de Mar — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Tossa de Mar?
Tossa de Mar in September — FAQ
- Is September a good time to visit Tossa de Mar?
- September in Tossa de Mar: warm, rainy, with clean air — an excellent time to visit. It ranks #4 of 12 months for Tossa de Mar on SeasonMap's comfort score (88/100).
- What is the weather like in Tossa de Mar in September?
- In September, Tossa de Mar averages a daily high of 25.9°C and a low of 18.5°C, with about 86.3 mm of rain over roughly 12.2 rainy days.
- What is the air quality in Tossa de Mar in September?
- Tossa de Mar has a mean US Air Quality Index of about 48 in September.
Other months in Tossa de Mar
Compare Tossa de Mar in September
Warmer or cooler than Tossa de Mar in September
Similar destinations in Southern Europe — September
Within 300 km: Girona's Emporda grape harvest around 25 Aug – 5 Oct, and Barcelona's La Mercè on 23–27 Sep.