Aix-les-Bains weather in May

In May, Aix-les-Bains sees average daytime highs of 19°C and overnight lows near 9°C, with 145 mm of precipitation across 16 wet days and about 14.7 hours of daylight. It is the 5th-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 17°C in the first days to 20°C by the end. The sky is clear or mostly clear about 23% of the time in May, and the air most often feels dry.

Daylight stretches from about 14 hours at the start of May to 15 h 12 min by month's end. Set against the rest of the year, May is Aix-les-Bains's 10th-clearest and 3rd-windiest month. For the whole year in context, see Aix-les-Bains's year-round climate.

Daytime high
19°
5th warmest
Overnight low
8th coldest
Precipitation
145 mm
16 wet days
Daylight
14 h 42 min
5:11 AM – 7:54 PM
Cloud cover
64%
10th clearest
Wind
5 km/h
3rd windiest
Solar energy
5.43 kWh/m²
Travel score
5.2
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 17°C in the first days to 20°C by the end.

A typical May day in Aix-les-Bains reaches about 19°C in the afternoon and slips back to 9°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 24°C. Set against its neighbours, May runs about 4°C warmer than April and about 4°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1177
2177
3177
4177
5178
6178
7188
8188
9188
10188
11188
12188
13189
14189
15199
16199
17199
18199
19199
20199
21199
221910
232010
242010
252010
262010
272010
282010
292010
302011
312011

How May really feels in Aix-les-Bains

Once humidity and wind are folded in, May averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Aix-les-Bains weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -2°12512.86.78.90.1
Feb / -1°10611610.10.8
Mar12° / 11912.73.911.62.8
Apr15° / 11613.32.113.34.1
May19° / 145160.314.75.2
Jun22° / 12°12914.5015.46.0
Jul25° / 14°12713015.16.7
Aug24° / 14°11712.2013.96.8
Sep20° / 11°10911.1012.36.1
Oct15° / 11512.20.310.74.4
Nov / 13413.13.59.31.7
Dec / -1°14413.56.38.60.2

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 15% of May, with mostly cloudy or overcast conditions the remaining 62%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13367
23367
33268
43268
53169
63268
73268
83268
93268
103367
113466
123466
133565
143664
153862
163862
173961
184060
194258
204357
214456
224555
234555
244555
254456
264456
274456
284456
294357
304357
314159

Chance of precipitation in May

Any precipitationSnow

Aix-les-Bains gets around 145 mm of rain and snow over 16 wet days in May, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 52% and peaks near 57% on the wettest days, and about 0 day brings snow.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1542
2552
3561
4561
5571
6571
7571
8571
9561
10561
11551
12541
13531
14531
15521
16511
17501
18491
19481
20471
21471
22461
23461
24461
25470
26470
27480
28490
29500
30510
31520

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 93% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19910
29910
39820
49820
59820
69820
79820
89820
99820
109730
119730
129730
139730
149730
159640
169640
179550
189550
199460
209370
219280
229190
2390100
2488120
2587130
2685150
2784160
2881181
2980191
3078211
3177221

Wind in May

Winds average 5 km/h in May.

Across May, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 14 hours at the start of May to 15 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 72 minutes over May. Sunrise moves from 5:32 AM to 4:57 AM, and sunset from 7:35 PM to 8:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.05:327:35
214.15:317:36
314.15:297:38
414.25:277:39
514.25:267:40
614.35:257:41
714.35:237:43
814.45:227:44
914.45:207:45
1014.55:197:47
1114.55:187:48
1214.55:167:49
1314.65:157:50
1414.65:147:51
1514.75:137:53
1614.75:117:54
1714.75:107:55
1814.85:097:56
1914.85:087:57
2014.95:077:59
2114.95:068:00
2214.95:058:01
2315.05:048:02
2415.05:038:03
2515.05:028:04
2615.15:018:05
2715.15:008:06
2815.15:008:07
2915.24:598:08
3015.24:588:09
3115.24:578:10

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.43 kWh/m².

For context, solar energy here swings from a low near 1.18 kWh/m² to a high of 6.03 kWh/m² in July across the year — May's 5.43 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.1Bright
55.1Bright
65.1Bright
75.1Bright
85.2Bright
95.2Bright
105.2Bright
115.3Bright
125.3Bright
135.3Bright
145.4Bright
155.4Bright
165.4Bright
175.5Bright
185.5Bright
195.5Bright
205.6Bright
215.6Bright
225.6Bright
235.7Bright
245.7Bright
255.7Bright
265.7Bright
275.7Bright
285.7Bright
295.7Bright
305.7Bright
315.7Bright
Planning a trip in May

Is May a good time to visit Aix-les-Bains?

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

5.2
Sightseeing
5th-best month of the year
2.1
Beach & pool
5th-best month of the year

May is a reasonable time to visit Aix-les-Bains for sightseeing.

What to pack for Aix-les-Bains in May

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

In May, Aix-les-Bains sees daytime highs around 19°C and nights near 9°C. Pack rain gear. Worth having: sun protection. About 16 days see rain.

rain gearsun protection

UV index in Aix-les-Bains in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Aix-les-Bains 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
Apr5Moderate
May7High
Jun7Very high
Jul9Very high
Aug7High
Sep6High
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Aix-les-Bains 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 Aix-les-Bains is worst in April — around 16 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateApr 916 µg/m³Sep 2011 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb14Moderate
Mar16Moderate
Apr16Moderate
May14Moderate
Jun15Moderate
Jul12Good
Aug12Good
Sep11Good
Oct11Good
Nov12Good
Dec13Moderate
Location & terrain

Where is Aix-les-Bains?

Aix-les-Bains sits at 45.7°N, 5.9°E, 246 m above sea level, in France. The nearest listed city is Chambéry, 14 km away.

Topography around Aix-les-Bains

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Aix-les-Bains.

Within 3 km, the terrain around Aix-les-Bains has significant variations in elevation — a maximum elevation change of 397 m around an average of 310 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,639 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,621 m.

The land around Aix-les-Bains is covered by trees (34%), water (23%) and artificial surfaces (22%) within 3 km, trees (59%) and grassland (26%) within 16 km, and trees (52%) and grassland (28%) within 80 km.

3 km
397 m
16 km
1,639 m
80 km
4,621 m
treesgrasslandcroplandartificial surfacesbare terrainsnow and icewater
May weather nearby: Chambéry 14 km · Seynod 26 km · Cran-Gevrier 28 km · Annecy 29 km · Annecy-le-Vieux 31 km · Albertville 37 km · Voiron 44 km · Saint-Égrève 54 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 Aix-les-Bains (45.6917°, 5.9086°, elevation 246 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. 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).