Colmar weather in May

In May, Colmar sees average daytime highs of 18°C and overnight lows near 9°C, with 101 mm of rain across 14.6 wet days and about 14.9 hours of daylight. It is the 5th-warmest and 2nd-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 20% of the time in May, and the air most often feels dry.

Daylight stretches from about 14 h 12 min at the start of May to 15 h 30 min by month's end. Set against the rest of the year, May is Colmar's 7th-clearest and 6th-windiest month. For the whole year in context, see Colmar's year-round climate.

Daytime high
18°
5th warmest
Overnight low
8th coldest
Rainfall
101 mm
14.6 wet days
Daylight
15 hours
4:58 AM – 7:56 PM
Cloud cover
66%
7th clearest
Wind
8 km/h
6th windiest
Solar energy
5.17 kWh/m²
Travel score
5.2
out of 10
Air quality
Good
PM10 16.2 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 17°C in the first days to 20°C by the end.

A typical May day in Colmar reaches about 18°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 12°C and 25°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
3178
4178
5178
6178
7178
8178
9178
10188
11188
12188
13189
14189
15189
16189
17189
18199
19199
20199
21199
22199
231910
242010
252010
262010
272010
282010
292010
302011
312011

How May really feels in Colmar

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.

Colmar weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -1°7612.14.28.60.0
Feb / -1°6610.74.49.90.3
Mar10° / 7312.42.411.62.2
Apr14° / 7112.20.613.44.0
May18° / 10114.6014.95.2
Jun22° / 12°9613.8015.86.0
Jul24° / 14°10314.5015.46.3
Aug24° / 14°9813.6014.16.4
Sep19° / 10°8011.5012.45.8
Oct14° / 8612.20.210.63.7
Nov / 7811.81.791.2
Dec / -0°921348.20.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 20% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 14% of May, with mostly cloudy or overcast conditions the remaining 66%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13268
23070
33070
43070
52971
62971
73070
83169
93169
103169
113268
123268
133367
143367
153466
163466
173565
183664
193763
203763
213862
223862
233862
243862
253862
263862
273862
283862
293862
303664
313664

Chance of precipitation in May

Any precipitation

Colmar gets around 101 mm of rain over 14.6 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 48% and peaks near 50% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
148
249
349
449
550
650
750
850
950
1050
1150
1250
1350
1450
1549
1649
1748
1848
1947
2046
2146
2245
2345
2444
2544
2645
2745
2846
2946
3047
3148

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 92% 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
69730
79730
89730
99730
109640
119640
129640
139640
149550
159550
169550
179460
189370
199370
209280
219190
2289101
2388111
2487121
2585141
2684151
2783161
2881172
2980182
3078193
3177203

Wind in May

Winds average 8 km/h in May.

Across May, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 14 h 12 min at the start of May to 15 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 78 minutes over May. Sunrise moves from 5:21 AM to 4:43 AM, and sunset from 7:35 PM to 8:13 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.25:217:35
214.35:197:36
314.35:177:38
414.45:167:39
514.45:147:40
614.55:137:42
714.55:117:43
814.65:097:45
914.65:087:46
1014.75:067:47
1114.75:057:49
1214.85:047:50
1314.85:027:52
1414.95:017:53
1514.94:597:54
1615.04:587:56
1715.04:577:57
1815.04:567:58
1915.14:547:59
2015.14:538:01
2115.24:528:02
2215.24:518:03
2315.24:508:04
2415.34:498:06
2515.34:488:07
2615.34:478:08
2715.44:468:09
2815.44:458:10
2915.44:448:11
3015.54:438:12
3115.54:438:13

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.17 kWh/m².

For context, solar energy here swings from a low near 0.88 kWh/m² to a high of 5.7 kWh/m² in June across the year — May's 5.17 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.8Bright
44.8Bright
54.8Bright
64.8Bright
74.9Bright
84.9Bright
94.9Bright
104.9Bright
115.0Bright
125.0Bright
135.0Bright
145.1Bright
155.1Bright
165.1Bright
175.2Bright
185.2Bright
195.3Bright
205.3Bright
215.3Bright
225.4Bright
235.4Bright
245.4Bright
255.4Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
315.5Bright
Planning a trip in May

Is May a good time to visit Colmar?

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
2.0
Beach & pool
5th-best month of the year

May is a reasonable time to visit Colmar for sightseeing.

What to pack for Colmar in May

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

In May, Colmar sees daytime highs around 18°C and nights near 9°C. Pack rain gear. Worth having: sun protection. About 15 days see rain.

rain gearsun protection

UV index in Colmar 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 Colmar peaks around July 14 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. 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 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 14UV 8Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr5Moderate
May7High
Jun7Very high
Jul8Very high
Aug6High
Sep4Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Colmar 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 Colmar is worst in April — around 15 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (November, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModerateGoodApr 1315 µg/m³Nov 199 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb11Good
Mar15Moderate
Apr15Moderate
May13Moderate
Jun15Moderate
Jul12Good
Aug12Moderate
Sep12Good
Oct10Good
Nov9Good
Dec10Good
Location & terrain

Where is Colmar?

Colmar sits at 48.1°N, 7.4°E, 193 m above sea level, in France. The nearest listed city is Sélestat, 21 km away.

Topography around Colmar

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

Within 3 km, the terrain around Colmar has only modest variations in elevation — a maximum elevation change of 34 m around an average of 196 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 863 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,363 m.

The land around Colmar is covered by artificial surfaces (48%) within 3 km, trees (41%) and cropland (35%) within 16 km, and trees (59%) within 80 km.

3 km
34 m
16 km
863 m
80 km
1,363 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Sélestat 21 km · Wittenheim 30 km · Unterkrozingen 31 km · Illzach 34 km · Müllheim 37 km · Mulhouse 37 km · Emmendingen 37 km · Saint-Dié-des-Vosges 38 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 Colmar (48.0808°, 7.3558°, elevation 193 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).