Bad Mergentheim weather in May

In May, Bad Mergentheim sees average daytime highs of 18°C and overnight lows near 9°C, with 74 mm of rain across 12.4 wet days and about 15.1 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 21% of the time in May, and the air most often feels dry.

Daylight stretches from about 14 h 18 min at the start of May to 15 h 42 min by month's end. Set against the rest of the year, May is Bad Mergentheim's 6th-clearest and 8th-windiest month. For the whole year in context, see Bad Mergentheim's year-round climate.

Daytime high
18°
5th warmest
Overnight low
8th coldest
Rainfall
74 mm
12.4 wet days
Daylight
15 h 06 min
4:44 AM – 7:51 PM
Cloud cover
66%
6th clearest
Wind
10 km/h
8th windiest
Solar energy
5.27 kWh/m²
Travel score
5.5
out of 10

Bad Mergentheim is human settlement in Germany.

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 Bad Mergentheim reaches about 18°C in the afternoon and slips back to 9°C overnight — a 9°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 3°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
12189
13189
14189
15189
16189
17189
18199
19199
20199
21199
221910
231910
241910
251910
262010
272010
282010
292011
302011
312011

How May really feels in Bad Mergentheim

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.

Bad Mergentheim 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 / -1°6311.74.58.40.0
Feb / -1°5410.54.39.80.1
Mar / 6211.91.911.51.9
Apr14° / 489.60.313.44.1
May18° / 7412.4015.15.5
Jun22° / 12°6311.80166.2
Jul24° / 14°6612.4015.66.6
Aug24° / 14°5610.4014.26.8
Sep19° / 10°559.9012.45.9
Oct13° / 62110.110.53.6
Nov / 6110.61.68.91.0
Dec / -0°7313.54.880.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 21% 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 64%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13961
23862
33862
43763
53763
63664
73664
83664
93664
103664
113565
123565
133466
143565
153664
163565
173565
183466
193565
203565
213565
223565
233565
243565
253565
263565
273565
283565
293565
303565
313664

Chance of precipitation in May

Any precipitation

Bad Mergentheim gets around 74 mm of rain over 12.4 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 rain averages around 40% and peaks near 42% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
141
242
342
442
542
642
742
842
941
1041
1141
1241
1341
1441
1540
1640
1740
1840
1939
2039
2139
2239
2339
2439
2539
2639
2739
2839
2940
3040
3141

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
39910
49910
59910
69910
79820
89820
99820
109820
119730
129730
139730
149640
159640
169640
179550
189460
199460
209370
219181
229091
2389101
2488111
2587121
2686131
2784142
2882162
2981172
3079183
3178193

Wind in May

Winds average 10 km/h in May.

Across May, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
511calm
611calm
711calm
811calm
911calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 14 h 18 min at the start of May to 15 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 84 minutes over May. Sunrise moves from 5:08 AM to 4:27 AM, and sunset from 7:29 PM to 8:09 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.35:087:29
214.45:067:30
314.55:047:32
414.55:027:33
514.65:017:35
614.64:597:36
714.74:577:38
814.74:567:39
914.84:547:41
1014.84:527:42
1114.94:517:44
1214.94:497:45
1315.04:487:46
1415.04:467:48
1515.14:457:49
1615.14:447:51
1715.24:427:52
1815.24:417:53
1915.34:407:55
2015.34:387:56
2115.34:377:57
2215.44:367:59
2315.44:358:00
2415.54:348:01
2515.54:338:02
2615.54:328:04
2715.64:318:05
2815.64:308:06
2915.64:298:07
3015.74:288:08
3115.74:278:09

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.27 kWh/m².

For context, solar energy here swings from a low near 0.72 kWh/m² to a high of 5.62 kWh/m² in June across the year — May's 5.27 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.0Bright
55.0Bright
65.1Bright
75.1Bright
85.1Bright
95.1Bright
105.2Bright
115.2Bright
125.2Bright
135.2Bright
145.3Bright
155.3Bright
165.3Bright
175.3Bright
185.3Bright
195.4Bright
205.4Bright
215.4Bright
225.4Bright
235.4Bright
245.4Bright
255.5Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
315.5Bright
Planning a trip in May

Is May a good time to visit Bad Mergentheim?

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

5.5
Sightseeing
5th-best month of the year
2.1
Beach & pool
5th-best month of the year

May is a reasonable time to visit Bad Mergentheim for sightseeing.

What to pack for Bad Mergentheim in May

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

In May, Bad Mergentheim sees daytime highs around 18°C and nights near 9°C. Worth packing: rain gear and sun protection. About 12 days see rain.

rain gearsun protection

UV index in Bad Mergentheim 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 Bad Mergentheim peaks around July 15 at about 7 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 1 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 15UV 7Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr4Moderate
May6High
Jun7High
Jul8Very high
Aug6High
Sep4Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Bad Mergentheim 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 Bad Mergentheim is worst in April — around 15 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (November, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1515 µg/m³Nov 218 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb10Good
Mar14Moderate
Apr15Moderate
May13Moderate
Jun15Moderate
Jul12Moderate
Aug12Moderate
Sep12Good
Oct10Good
Nov8Good
Dec9Good
Location & terrain

Where is Bad Mergentheim?

Bad Mergentheim sits at 49.5°N, 9.8°E, 211 m above sea level, in Germany. The nearest listed city is Lauda-Königshofen, 9.0 km away.

Topography around Bad Mergentheim

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

Within 3 km, the terrain around Bad Mergentheim has only modest variations in elevation — a maximum elevation change of 195 m around an average of 285 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 312 m; within 80 km, large variations in elevation — a maximum elevation change of 676 m.

The land around Bad Mergentheim is covered by trees (41%) and cropland (26%) within 3 km, cropland (45%) and trees (37%) within 16 km, and trees (46%) and cropland (34%) within 80 km.

3 km
195 m
16 km
312 m
80 km
676 m
treesgrasslandcroplandartificial surfaces
May weather nearby: Lauda-Königshofen 9.0 km · Künzelsau 24 km · Rothenburg ob der Tauber 32 km · Buchen in Odenwald 33 km · Wertheim 35 km · Würzburg 36 km · Öhringen 38 km · Kitzingen 39 km

Germany travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 80% of US
price level, 2025
GDP per capita
$60,496
2025
Happiness
6.9 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
0.9
per 100k, 2023
Road deaths
3.8
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 615
Religion
none 44%Roman Catholic 25%Protestant 23%other 5%

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 Bad Mergentheim (49.4925°, 9.7736°, elevation 211 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).