Bastia weather in May

In May, Bastia sees average daytime highs of 18°C and overnight lows near 16°C, with 37 mm of rain across 5.6 wet days and about 14.4 hours of daylight. It is the 6th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 16°C in the first days to 19°C by the end. The sky is clear or mostly clear about 50% of the time in May, and the air most often feels comfortable.

Daylight stretches from about 13 h 48 min at the start of May to 14 h 54 min by month's end. Set against the rest of the year, May is Bastia's 5th-clearest and 9th-windiest month. For the whole year in context, see Bastia's year-round climate.

Daytime high
18°
6th warmest
Overnight low
16°
7th coldest
Rainfall
37 mm
5.6 wet days
Daylight
14 h 24 min
5:06 AM – 7:31 PM
Cloud cover
43%
5th clearest
Wind
13 km/h
9th windiest
Solar energy
6.61 kWh/m²
Travel score
6.6
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 May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 16°C in the first days to 19°C by the end.

A typical May day in Bastia reaches about 18°C in the afternoon and slips back to 16°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 20°C. Set against its neighbours, May runs about 3°C warmer than April and about 4°C cooler than June.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
11615
21615
31615
41615
51715
61715
71715
81715
91715
101716
111716
121716
131716
141816
151816
161816
171816
181816
191817
201817
211817
221917
231917
241917
251917
261917
271918
281918
291918
302018
312018

Bastia weather by month

How May compares with the rest of the year at a glance. May is the 6th-warmest and 9th-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 May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 50% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 16% of May, with mostly cloudy or overcast conditions the remaining 35%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16040
26040
36040
46040
56040
66139
76040
86139
96139
106139
116238
126238
136238
146337
156436
166436
176634
186634
196733
206832
216832
226931
237030
247030
257030
267030
277030
287129
297129
307129
317129

Chance of precipitation in May

Any precipitation

Bastia gets around 37 mm of rain over 5.6 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 18% and peaks near 24% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
124
224
323
423
522
621
721
821
920
1020
1120
1219
1319
1419
1518
1618
1718
1817
1917
2017
2117
2217
2316
2416
2516
2615
2715
2814
2914
3014
3114

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the comfortable band about 47% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1613720
2593920
3564130
4544330
5514540
6484750
7464860
8445070
9425080
10405190
11385390
123753100
133554110
143453130
153353140
163252151
173053161
182952181
192852191
202751211
212649232
222548252
232447272
242246293
252145313
261944334
271843354
281641385
291540396
301338417
311237438

Wind in May

Winds average 13 km/h in May.

Across May, daily wind ranges from about 12 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 48 min at the start of May to 14 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 66 minutes over May. Sunrise moves from 5:24 AM to 4:53 AM, and sunset from 7:15 PM to 7:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.85:247:15
213.95:237:16
313.95:217:17
414.05:207:18
514.05:197:19
614.15:177:20
714.15:167:21
814.15:157:23
914.25:147:24
1014.25:127:25
1114.25:117:26
1214.35:107:27
1314.35:097:28
1414.45:087:29
1514.45:077:30
1614.45:067:31
1714.55:057:32
1814.55:047:33
1914.55:037:34
2014.65:027:36
2114.65:017:37
2214.65:007:38
2314.74:597:39
2414.74:587:39
2514.74:577:40
2614.74:577:41
2714.84:567:42
2814.84:557:43
2914.84:557:44
3014.84:547:45
3114.94:537:46

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.61 kWh/m².

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 — May's 6.61 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.2Intense
46.2Intense
56.2Intense
66.3Intense
76.3Intense
86.3Intense
96.4Intense
106.4Intense
116.5Intense
126.5Intense
136.5Intense
146.5Intense
156.6Intense
166.6Intense
176.6Intense
186.7Intense
196.7Intense
206.7Intense
216.8Intense
226.8Intense
236.8Intense
246.8Intense
256.8Intense
266.8Intense
276.9Intense
286.9Intense
296.9Intense
306.9Intense
316.9Intense
Planning a trip in May

Hazard calendar for Bastia

In seasonPeak

None of Bastia's seasonal hazards are active in May. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

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 May a good time to visit Bastia?

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

6.6
Sightseeing
5th-best month of the year
2.2
Beach & pool
6th-best month of the year

May is a reasonable time to visit Bastia for sightseeing.

What to pack for Bastia in May

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

In May, Bastia sees daytime highs around 18°C and nights near 16°C. Pack sun protection. About 6 days see rain.

sun protection

Sea temperature near Bastia in May

The nearest coast averages about 18°C in May — 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 May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 6 — enough to warrant sun protection. 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
May 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).