La Seyne-sur-Mer weather in May

In May, La Seyne-sur-Mer sees average daytime highs of 19°C and overnight lows near 15°C, with 42 mm of rain across 5.4 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 18°C in the first days to 21°C by the end. The sky is clear or mostly clear about 48% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 54 min at the start of May to 14 h 54 min by month's end. Set against the rest of the year, May is La Seyne-sur-Mer's 7th-clearest and 8th-windiest month. For the whole year in context, see La Seyne-sur-Mer's year-round climate.

Daytime high
19°
6th warmest
Overnight low
15°
7th coldest
Rainfall
42 mm
5.4 wet days
Daylight
14 h 30 min
5:19 AM – 7:47 PM
Cloud cover
46%
7th clearest
Wind
16 km/h
8th windiest
Solar energy
6.62 kWh/m²
Travel score
7.0
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 18°C in the first days to 21°C by the end.

A typical May day in La Seyne-sur-Mer reaches about 19°C in the afternoon and slips back to 15°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 22°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)
11813
21813
31813
41814
51814
61814
71814
81814
91914
101914
111914
121914
131915
141915
151915
161915
171915
182015
192015
202015
212015
222016
232016
242016
252016
262116
272116
282116
292116
302117
312117

La Seyne-sur-Mer 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° / 627.49.23.4
Feb12° / 496.310.23.6
Mar14° / 10°435.511.64.7
Apr16° / 12°587.313.15.5
May19° / 15°425.414.47.0
Jun23° / 18°243.515.18.4
Jul26° / 21°81.414.98.8
Aug26° / 21°111.813.88.5
Sep23° / 19°605.712.38.0
Oct19° / 16°918.110.86.6
Nov15° / 12°10410.49.54.8
Dec13° / 717.98.93.8

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 48% 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 36%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25743
35743
45644
55743
65743
75743
85842
95842
105941
115941
126040
136040
146139
156238
166238
176436
186535
196634
206733
216832
226832
236931
247030
257030
267030
277129
287129
297129
307129
317129

Chance of precipitation in May

Any precipitation

La Seyne-sur-Mer gets around 42 mm of rain over 5.4 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 25% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
125
225
324
424
523
623
722
822
921
1020
1120
1220
1319
1419
1519
1618
1717
1817
1916
2016
2115
2215
2314
2414
2513
2613
2713
2813
2913
3013
3113

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 50% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1782200
2752410
3732610
4712810
5693010
6673210
7653410
8623620
9603820
10584020
11564220
12544330
13534430
14514540
15504640
16484750
17474760
18454770
19444890
204348100
214148110
224047130
233847140
243747160
253547180
263446200
273246220
283045240
292945261
302744281
312644291

Wind in May

Winds average 16 km/h in May.

Across May, daily wind ranges from about 16 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
117light breeze
217light breeze
317light breeze
417light breeze
517light breeze
617light breeze
717light breeze
817light breeze
917light breeze
1017light breeze
1117light breeze
1217light breeze
1317light breeze
1417light breeze
1517light breeze
1617light breeze
1717light breeze
1817light breeze
1917light breeze
2016light breeze
2116light breeze
2216light breeze
2316light breeze
2416light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3016light breeze
3116light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 54 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 60 minutes over May. Sunrise moves from 5:38 AM to 5:06 AM, and sunset from 7:30 PM to 8:01 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.95:387:30
213.95:367:31
314.05:357:32
414.05:337:33
514.05:327:34
614.15:317:36
714.15:297:37
814.25:287:38
914.25:277:39
1014.25:267:40
1114.35:247:41
1214.35:237:42
1314.45:227:43
1414.45:217:45
1514.45:207:46
1614.55:197:47
1714.55:187:48
1814.55:177:49
1914.65:167:50
2014.65:157:51
2114.65:147:52
2214.75:137:53
2314.75:127:54
2414.75:117:55
2514.85:107:56
2614.85:107:57
2714.85:097:58
2814.85:087:59
2914.95:088:00
3014.95:078:00
3114.95:068:01

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.62 kWh/m².

For context, solar energy here swings from a low near 1.63 kWh/m² to a high of 7.34 kWh/m² in July across the year — May's 6.62 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
146.6Intense
156.6Intense
166.6Intense
176.7Intense
186.7Intense
196.7Intense
206.8Intense
216.8Intense
226.8Intense
236.8Intense
246.9Intense
256.9Intense
266.9Intense
276.9Intense
287.0Intense
297.0Intense
307.0Intense
317.0Intense
Planning a trip in May

Hazard calendar for La Seyne-sur-Mer

In seasonPeak

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

La Seyne-sur-Mer's rainy season runs September–February, 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 La Seyne-sur-Mer?

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

7.0
Sightseeing
5th-best month of the year
3.3
Beach & pool
5th-best month of the year

May is one of the better times to visit La Seyne-sur-Mer for general sightseeing.

What to pack for La Seyne-sur-Mer in May

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

In May, La Seyne-sur-Mer sees daytime highs around 19°C and nights near 15°C. Pack sun protection. About 5 days see rain.

sun protection

Sea temperature near La Seyne-sur-Mer in May

The nearest coast averages about 17°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 23°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 19 to Oct 8 — about 3.7 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar13Bracing
Apr14Bracing
May17Cool
Jun20Cool
Jul22Refreshing
Aug23Refreshing
Sep22Refreshing
Oct20Cool
Nov17Cool
Dec15Cool

UV index in La Seyne-sur-Mer 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 La Seyne-sur-Mer peaks around July 15 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 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 15UV 9Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar4Moderate
Apr7High
May6High
Jun8Very high
Jul9Very high
Aug7Very high
Sep5High
Oct3Moderate
Nov2Low
Dec1Low

Air quality in La Seyne-sur-Mer in May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May falls, not just the annual average.

Air quality in La Seyne-sur-Mer is worst in March — around 15 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodMar 1915 µg/m³Dec 1010 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb14Moderate
Mar15Moderate
Apr15Moderate
May14Moderate
Jun13Moderate
Jul12Moderate
Aug13Moderate
Sep12Good
Oct12Moderate
Nov10Good
Dec10Good
Location & terrain

Where is La Seyne-sur-Mer?

La Seyne-sur-Mer sits at 43.1°N, 5.9°E, 5 m above sea level, in France. The nearest listed city is Six-Fours-les-Plages, 5.0 km away.

Topography around La Seyne-sur-Mer

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of La Seyne-sur-Mer.

Within 3 km, the terrain around La Seyne-sur-Mer has only modest variations in elevation — a maximum elevation change of 196 m around an average of 24 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 810 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,558 m.

The land around La Seyne-sur-Mer is covered by artificial surfaces (54%) and trees (22%) within 3 km, water (49%) and trees (30%) within 16 km, and water (45%) and trees (39%) within 80 km.

3 km
196 m
16 km
810 m
80 km
1,558 m
treesshrubsgrasslandcroplandartificial surfaceswater
May weather nearby: Six-Fours-les-Plages 5.0 km · Toulon 5.0 km · Sanary-sur-Mer 6.0 km · La Valette-du-Var 9.0 km · La Garde 11 km · La Crau 17 km · Hyères 20 km · La Ciotat 24 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 La Seyne-sur-Mer (43.1032°, 5.8782°, elevation 5 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).