Formentera · September
Best travel monthTravel seasonSpain · Europe
Climate Overview
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Ø day, range from coolest to warmest dayØ dayrange | 16° (61°)11– (52–)20 (68) | 16° (61°)12– (54–)20 (68) | 18° (64°)12– (54–)22 (72) | 20° (68°)15– (59–)23 (73) | 23° (73°)18– (64–)27 (81) | 27° (81°)22– (72–)31 (88) | 30° (86°)26– (79–)33 (91) | 30° (86°)26– (79–)33 (91) | 28° (82°)23– (73–)30 (86) | 24° (75°)19– (66–)28 (82) | 20° (68°)14– (57–)24 (75) | 17° (63°)12– (54–)20 (68) |
Ø night, range from coldest to warmest nightØ nightrange | 8° (46°)2– (36–)14 (57) | 9° (48°)3– (37–)14 (57) | 10° (50°)4– (39–)14 (57) | 13° (55°)7– (45–)16 (61) | 16° (61°)10– (50–)19 (66) | 20° (68°)15– (59–)23 (73) | 23° (73°)18– (64–)25 (77) | 23° (73°)18– (64–)26 (79) | 21° (70°)15– (59–)25 (77) | 17° (63°)11– (52–)22 (72) | 13° (55°)7– (45–)19 (66) | 10° (50°)4– (39–)15 (59) |
☀️Sunshine | 6h UV 4 | 7h UV 5 | 8h UV 7 | 9h UV 8 | 11h UV 9 | 12h UV 9 | 11h UV 9 | 10h UV 8 | 8h UV 7 | 7h UV 6 | 6h UV 5 | 5h UV 4 |
🌊Water Temp | 15° (59°) | 15° (59°) | 15° (59°) | 17° (63°) | 19° (66°) | 23° (73°) | 26° (79°) | 27° (81°) | 26° (79°) | 23° (73°) | 20° (68°) | 17° (63°) |
🌧Rain Days | 4d35mm (1.4") | 3d23mm (0.9") | 3d42mm (1.6") | 3d34mm (1.4") | 2d16mm (0.6") | 1d15mm (0.6") | 0d2mm (0.1") | 2d24mm (1.0") | 3d53mm (2.1") | 4d54mm (2.1") | 5d59mm (2.3") | 4d41mm (1.6") |
Best travel time current monthØ = average · small figures = range: coolest–warmest day / coldest–warmest nightClimate data 2005–2025 · Source: ERA5 + station data
Travel season — mid-range prices, good availability.
September is among the best months in Formentera: only 3 rain days, 28°C (82°F) highs, and good sunshine make for ideal holiday conditions.
Daytime highs average 28°C (82°F), cooling to 21°C (70°F) at night (daily average: 24°C (75°F)). Peaks reach around 30°C (86°F), the coldest nights around 15°C (59°F). The sun shines an average of 8 hours per day; there are 3 rain days with 53 mm (2.1 in) total. The water is a warm 26°C (79°F) — perfect for snorkelling and swimming.
Pack light summer clothing, sunscreen, and swimwear — beach and water conditions in September are ideal.
For many, September is the loveliest month: the sea is still warm, the beaches emptier and the light softer. In October the first showers fall, then many businesses close. By November the season is over and the island belongs to the locals again.
Packing list for Formentera in September
- T-shirts and shorts
- Swimwear and beach towel
- SPF 50 sunscreen
- Sunglasses
- Sun hat
- Small umbrella (occasional showers possible)
- Travel first-aid kit
Frequently Asked Questions
- Is September a good time to visit Formentera?
- Yes — September is one of the best months to visit Formentera (Climate Score: 78/100). Pleasant temperatures (28°C (82°F)), good sunshine (8 h/day), and few rain days (3) make it one of the most recommended months.
- How warm is it in Formentera in September?
- In September, Formentera sees daily highs of 28°C (82°F). Nights cool to 21°C (70°F), with a daily average of 24°C (75°F). Peaks reach around 30°C (86°F), the coldest nights around 15°C (59°F).
- How much rain falls in Formentera in September?
- In September, Formentera receives an average of 53 mm (2.1 in) of rain over 3 rain days. That is comparatively dry.
- How many sunshine hours does Formentera get in September?
- Formentera averages 8 sunshine hours per day in September — close to the annual average.
- How warm is the water in Formentera in September?
- Water temperature in Formentera in September averages 26°C (79°F) — ideal for swimming and snorkelling.
