Bastia weather in December

In December, Bastia sees average daytime highs of 13°C and overnight lows near 11°C, with 75 mm of precipitation across 10.2 wet days and about 8.9 hours of daylight. It is the 9th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 13°C through the month. The sky is clear or mostly clear about 40% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 06 min at the start of December to 8 h 54 min by month's end. Set against the rest of the year, December is Bastia's 10th-clearest and 1st-windiest month. For the whole year in context, see Bastia's year-round climate.

Daytime high
13°
9th warmest
Overnight low
11°
4th coldest
Precipitation
75 mm
10.2 wet days
Daylight
8 h 54 min
7:52 AM – 4:45 PM
Cloud cover
52%
10th clearest
Wind
19 km/h
1st windiest
Solar energy
1.62 kWh/m²
Travel score
3.8
out of 10
Air quality
Good
PM2.5 8.7 µg/m³ · 2019

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 13°C through the month.

A typical December day in Bastia reaches about 13°C in the afternoon and slips back to 11°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 10°C and 15°C. Set against its neighbours, December runs about 3°C cooler than November and about 1°C warmer than January.

10°15°20°151015202531
Avg high (°C)Avg low (°C)
11412
21412
31412
41412
51412
61412
71412
81412
91312
101312
111312
121312
131312
141312
151311
161311
171311
181311
191311
201311
211311
221311
231311
241311
251311
261311
271311
281211
291211
301211
311211

Bastia weather by month

How December compares with the rest of the year at a glance. December is the 9th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan12° / 10°578.59.23.3
Feb12° / 10°51710.33.3
Mar13° / 11°557.311.63.9
Apr15° / 13°497.713.14.8
May18° / 16°375.614.46.6
Jun22° / 20°243.315.18.2
Jul24° / 23°91.514.89.2
Aug25° / 23°112.313.78.8
Sep22° / 21°466.312.37.7
Oct19° / 18°809.110.86.5
Nov16° / 14°9911.39.64.8
Dec13° / 11°7510.28.93.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 40% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 17% of December, with mostly cloudy or overcast conditions the remaining 44%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25743
35842
45842
55842
65842
75842
85842
95842
105743
115743
125743
135743
145743
155644
165545
175545
185545
195446
205446
215446
225446
235446
245545
255545
265545
275545
285545
295545
305545
315545

Chance of precipitation in December

Any precipitation

Bastia gets around 75 mm of rain and snow over 10.2 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 32% and peaks near 38% on the wettest days, and about 0 day brings snow. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
138
237
336
436
535
634
734
833
933
1033
1133
1233
1332
1432
1532
1632
1732
1832
1932
2032
2132
2232
2332
2432
2531
2631
2730
2830
2929
3029
3128

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the dry band about 97% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19181
29271
39460
49460
59550
69640
79640
89640
99730
109730
119730
129730
139820
149820
159820
169820
179820
189910
199910
209910
219910
229910
239910
249910
259910
269910
279910
289910
299910
3010000
3110000

Wind in December

Winds average 19 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 18 km/h on the calmest days to 19 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
119light breeze
219light breeze
319light breeze
419light breeze
519light breeze
619light breeze
719light breeze
819light breeze
919light breeze
1019light breeze
1119light breeze
1219light breeze
1319light breeze
1419light breeze
1519light breeze
1619light breeze
1719light breeze
1819light breeze
1919light breeze
2019light breeze
2119light breeze
2219light breeze
2318light breeze
2418light breeze
2518light breeze
2618light breeze
2718light breeze
2818light breeze
2918light breeze
3018light breeze
3118light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 h 06 min at the start of December to 8 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over December. Sunrise moves from 7:39 AM to 7:58 AM, and sunset from 4:45 PM to 4:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.17:394:45
29.17:404:44
39.17:414:44
49.07:424:44
59.07:434:44
69.07:444:44
79.07:454:44
89.07:464:44
98.97:474:44
108.97:484:44
118.97:484:44
128.97:494:44
138.97:504:44
148.97:514:44
158.97:514:44
168.97:524:45
178.97:534:45
188.97:534:45
198.97:544:46
208.97:544:46
218.97:554:46
228.97:564:47
238.97:564:47
248.97:564:48
258.97:574:48
268.97:574:49
278.97:574:50
288.97:584:50
298.97:584:51
308.97:584:52
318.97:584:52

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.62 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.62 kWh/m² to a high of 7.25 kWh/m² in July across the year — December's 1.62 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.7Dim
21.7Dim
31.7Dim
41.7Dim
51.7Dim
61.7Dim
71.7Dim
81.7Dim
91.6Dim
101.6Dim
111.6Dim
121.6Dim
131.6Dim
141.6Dim
151.6Dim
161.6Dim
171.6Dim
181.6Dim
191.6Dim
201.6Dim
211.6Dim
221.6Dim
231.6Dim
241.6Dim
251.6Dim
261.6Dim
271.6Dim
281.6Dim
291.6Dim
301.6Dim
311.6Dim
Planning a trip in December

Hazard calendar for Bastia

In seasonPeak

In December, Bastia sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Bastia's rainy season runs September–April, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Bastia?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

3.8
Sightseeing
10th-best month of the year
0.0
Beach & pool
9th-best month of the year

December is a weaker month for outdoor sightseeing in Bastia.

What to pack for Bastia in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, Bastia sees daytime highs around 13°C and nights near 11°C. Worth packing: a warm layer and rain gear. About 10 days see rain.

a warm layerrain gear

Sea temperature near Bastia in December

The nearest coast averages about 16°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 17 km away) is warmest in August at about 25°C and coldest in February near 14°C.

It's comfortable for a long swim from Jun 2 to Oct 24 — about 4.8 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb14Bracing
Mar14Bracing
Apr15Cool
May18Cool
Jun22Refreshing
Jul25Warm
Aug25Warm
Sep23Refreshing
Oct21Refreshing
Nov18Cool
Dec16Cool

UV index in Bastia in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 1. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Bastia peaks around July 12 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 12UV 9Dec 23UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar5Moderate
Apr5Moderate
May6High
Jun8Very high
Jul9Very high
Aug7High
Sep5High
Oct3Moderate
Nov2Moderate
Dec1Low
Location & terrain

Where is Bastia?

Bastia sits at 42.7°N, 9.5°E, 1 m above sea level, in France. The nearest listed city is Piombino, 91 km away.

Topography around Bastia

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Bastia.

Within 3 km, the terrain around Bastia has large variations in elevation — a maximum elevation change of 629 m around an average of 120 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,311 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,620 m.

The land around Bastia is covered by water (47%) and trees (26%) within 3 km, water (53%) and trees (20%) within 16 km, and water (70%) within 80 km.

3 km
629 m
16 km
1,311 m
80 km
2,620 m
treesshrubsgrasslandcroplandartificial surfaceswater
December weather nearby: Piombino 91 km · Ajaccio 105 km · Cecina 110 km · Follonica 110 km · Rosignano Solvay-Castiglioncello 111 km · Livorno 118 km · Grosseto 136 km · Pisa 136 km

France travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E
230 V · 50 Hz
Prices
≈ 77% of US
price level, 2025
GDP per capita
$48,986
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
1.3
per 100k, 2023
Road deaths
5.1
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 539
Religion
Roman Catholic 47%none 33%Muslim 4%Protestant 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Bastia (42.7022°, 9.4512°, elevation 1 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).