Hardly any mainland French towns collect more rain than Sermano: 1,181 mm a year
Deep winter brings January lows near 0.7°C. November is the wettest month here, with about 8.6 times the rain of July. Of the 16 towns of 2,500+ in Haute-Corse, it has the coldest January nights. Keep the boiler serviced for the months from November to April, which average under 10°C.
Figures from Météo-France’s Renno station, 40 km west: at that distance, read them as the area’s climate rather than the town’s.
A year in Sermano at a glance
Each month’s typical high and low in °C, at the Renno station.
What a year in Sermano feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Renno.
About 1,181 mm of rain a year
November is the wettest month and July the driest. About 37 days a year bring 10 mm or more. The wettest of 16 towns of 2,500+ in Haute-Corse.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Bastia
48 frosts and 64 days of 25°C a year
On about 48 nights a year the air drops to 0°C or below; days that stay below freezing are rare. About 64 days a year reach 25°C, and 12 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Renno: a frost is a night of 0°C or below, a summer day (jour d’été) 25°C or more, a hot day (forte chaleur) 30°C or more.
The Météo-France station at Renno
Renno is 40 km west of Sermano. Every figure on this page is the station’s, not a measurement in Sermano itself. At that distance, read them as the area’s climate.
| Station (Météo-France number) | Renno (20258001) |
| Distance from the town | 40 km west |
| Station altitude | 755 m |
| Town altitude (its center) | 749 m |
| Period | 1993–2020 (the station’s own record) |
| Nearest station of any kind | 5.8 km |
| Sunshine measured at | Bastia, 31 km away |
TownRatings matches each commune to one station with at least 24 years of temperature and rain records: the nearest, counting every 100 m of height difference as 10 km, never across the sea.
How Sermano compares
Against the 4,385 towns of 2,500 or more in mainland France, each read from its own matched station. The dots are the other towns of 2,500+ in Haute-Corse.
Nearby towns’ climate
The nearest towns of 2,500+ within 29 km, each with its own matched station.
| Town | Station | July high | January low | Rain a year |
|---|---|---|---|---|
| Sermano | Renno | 26.4°C | 0.7°C | 1,181 mm |
| Corte 9.2 km | Corte | 31.2°C 4.8°C warmer | 0.4°C about the same | 824 mm |
| Penta-di-Casinca 25 km | Bastia | 29.4°C 3°C warmer | 5.4°C 4.7°C milder | 817 mm |
| Vescovato 26 km | Bastia | 29.4°C 3°C warmer | 5.4°C 4.7°C milder | 817 mm |
Sermano weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Renno station; sunshine at Bastia.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 9.2°C | 0.7°C | 4.9°C | 122 mm | 139 |
| February | 9.6°C | 0.4°C | 5.0°C | 103 mm | 159 |
| March | 12.2°C | 2.2°C | 7.2°C | 100 mm | 196 |
| April | 14.8°C | 4.6°C | 9.7°C | 106 mm | 220 |
| May | 18.8°C | 8.0°C | 13.4°C | 89 mm | 270 |
| June | 23.3°C | 11.0°C | 17.1°C | 42 mm | 306 |
| July | 26.4°C | 12.9°C | 19.7°C | 22 mm | 347 |
| August | 26.8°C | 13.3°C | 20.1°C | 34 mm | 314 |
| September | 22.2°C | 10.5°C | 16.3°C | 93 mm | 238 |
| October | 18.6°C | 7.9°C | 13.3°C | 124 mm | 182 |
| November | 13.2°C | 4.5°C | 8.9°C | 191 mm | 134 |
| December | 10.0°C | 1.7°C | 5.8°C | 154 mm | 139 |
| Year | 17.1°C | 6.5°C | 11.8°C | 1,181 mm | 2,645 |
Where Sermano’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Renno, 40 km away: statistics for 1991–2020 (the station’s own years, 1993–2020, where its record is shorter).
- Which station: among stations with at least 24 of the 30 years of temperature and rain, the nearest to the commune’s population-weighted center, counting each 100 m of height difference as 10 km; mainland towns use mainland stations and each overseas département its own.
- Altitudes: the town’s from IGN’s RGE ALTI® at its population-weighted center; the station’s from Météo-France.
- Sunshine: the nearest station with at least 10 years of sunshine records, Bastia, 31 km away.
- Comparisons: every town of 2,500 or more in mainland France, read the same way; the dots are the towns of 2,500+ in Haute-Corse.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Sermano’s climate
How warm does Sermano get in summer?
August is the warmest month, with average highs of 26.8°C. About 64 days a year reach 25°C, more than 55% of mainland French towns, and about 12 reach 30°C.
How cold does Sermano get in winter?
February nights average 0.4°C. The air drops to 0°C or below on about 48 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Sermano get?
About 1,181 mm a year, more than 96% of mainland French towns. November is the wettest month (191 mm) and July the driest (22 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Bastia (31 km away), averages 2,645 hours of sunshine a year.
Are these figures for Sermano itself?
No: they are the normals of the Météo-France station matched to Sermano, Renno, 40 km away. France publishes its climate normals by station, not by commune; a valley, a hill or the sea can make a difference over a few kilometers.
Where do these figures come from?
Météo-France’s fiches climatologiques: 30-year averages (1991–2020) for each of its long-running stations, published as open data since 2024. They are normals, not a forecast.
Source: Météo-France, fiches climatologiques, 1991–2020 statistics (station RENNO, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Sermano →
Contains public sector information under the Licence Ouverte / Open Licence 2.0 (Etalab): INSEE, DGFiP, the Interior Ministry’s statistics service (SSMSI), the Ministry of Education (DEPP), the Health Ministry’s statistics service (DREES) and the Housing Ministry (Carte des loyers). Commune boundaries: IGN Admin Express.