Tønder weather in May

In May, Tønder sees average daytime highs of 14°C and overnight lows near 8°C, with 51 mm of rain across 10.4 wet days and about 15.8 hours of daylight. It is the 5th-warmest and 11th-wettest month of the year here.

Highs climb over the month, from about 13°C in the first days to 16°C by the end. The sky is clear or mostly clear about 30% of the time in May, and the air most often feels dry.

Daylight stretches from about 14 h 54 min at the start of May to 16 h 36 min by month's end. Set against the rest of the year, May is Tønder's 1st-clearest and 10th-windiest month. For the whole year in context, see Tønder's year-round climate.

Daytime high
14°
5th warmest
Overnight low
7th coldest
Rainfall
51 mm
10.4 wet days
Daylight
15 h 48 min
4:25 AM – 8:16 PM
Cloud cover
58%
1st clearest
Wind
17 km/h
10th windiest
Solar energy
5.42 kWh/m²
Travel score
4.2
out of 10

Tønder is town in Denmark.

Density
2,415/km²
people per km²
Founded
1017

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 13°C in the first days to 16°C by the end.

A typical May day in Tønder reaches about 14°C in the afternoon and slips back to 8°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 10°C and 19°C. Set against its neighbours, May runs about 4°C warmer than April and about 3°C cooler than June.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
1127
2137
3137
4137
5137
6137
7137
8137
9138
10148
11148
12148
13148
14148
15148
16148
17149
18149
19159
20159
21159
22159
23159
241510
251510
261510
271610
281610
291610
301610
311610

How May really feels in Tønder

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.

Tønder weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 7313.92.77.60.0
Feb / 5611.12.79.30.0
Mar / 5511.2211.40.5
Apr10° / 429.60.313.82.4
May14° / 5110.4015.84.2
Jun17° / 12°7111.20175.2
Jul19° / 14°7812.6016.55.8
Aug20° / 14°9114014.75.7
Sep17° / 12°8413.1012.54.7
Oct12° / 8914.2010.22.9
Nov / 7713.90.48.11.2
Dec / 77141.770.1

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in May, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 18% of May, with mostly cloudy or overcast conditions the remaining 52%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14654
24753
34753
44852
54852
64852
74951
85050
94951
104951
115050
125050
135050
145050
155050
164951
174852
184951
194852
204852
214753
224753
234753
244654
254654
264654
274555
284555
294456
304555
314456

Chance of precipitation in May

Any precipitation

Tønder gets around 51 mm of rain over 10.4 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 34% and peaks near 35% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
134
234
334
434
533
633
733
833
933
1033
1133
1233
1333
1433
1533
1633
1733
1834
1934
2034
2134
2234
2335
2435
2534
2634
2734
2834
2934
3034
3134

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 97% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
110000
210000
310000
410000
510000
610000
710000
810000
910000
1010000
119910
129910
139910
149910
159820
169820
179820
189730
199730
209730
219640
229640
239550
249550
259460
269370
279271
289181
299181
309091
3189101

Wind in May

Winds average 17 km/h in May.

Across May, daily wind ranges from about 17 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
2017light breeze
2117light breeze
2217light breeze
2317light breeze
2417light breeze
2517light breeze
2617light breeze
2717light breeze
2817light breeze
2917light breeze
3017light breeze
3117light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 14 h 54 min at the start of May to 16 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 102 minutes over May. Sunrise moves from 4:55 AM to 4:04 AM, and sunset from 7:48 PM to 8:40 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.94:557:48
215.04:537:50
315.04:517:52
415.14:497:54
515.24:477:56
615.24:457:58
715.34:428:00
815.44:408:02
915.44:388:03
1015.54:368:05
1115.54:348:07
1215.64:338:09
1315.74:318:11
1415.74:298:13
1515.84:278:14
1615.84:258:16
1715.94:248:18
1816.04:228:20
1916.04:208:21
2016.14:198:23
2116.14:178:25
2216.24:158:27
2316.24:148:28
2416.34:138:30
2516.34:118:31
2616.44:108:33
2716.44:088:34
2816.54:078:36
2916.54:068:37
3016.64:058:39
3116.64:048:40

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.42 kWh/m².

For context, solar energy here swings from a low near 0.4 kWh/m² to a high of 5.64 kWh/m² in June across the year — May's 5.42 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.1Bright
45.1Bright
55.2Bright
65.2Bright
75.2Bright
85.3Bright
95.3Bright
105.3Bright
115.3Bright
125.4Bright
135.4Bright
145.4Bright
155.4Bright
165.4Bright
175.4Bright
185.4Bright
195.5Bright
205.5Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.5Bright
265.6Bright
275.6Bright
285.6Bright
295.6Bright
305.6Bright
315.7Bright
Planning a trip in May

Is May a good time to visit Tønder?

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

4.2
Sightseeing
5th-best month of the year
0.1
Beach & pool
5th-best month of the year

May is a reasonable time to visit Tønder for sightseeing.

What to pack for Tønder in May

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

In May, Tønder sees daytime highs around 14°C and nights near 8°C. Worth packing: a warm layer, rain gear and sun protection. About 10 days see rain.

a warm layerrain gearsun protection

Sea temperature near Tønder in May

The nearest coast averages about 11°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 19°C and coldest in February near 3°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan4Bracing
Feb3Bracing
Mar4Bracing
Apr7Bracing
May11Bracing
Jun15Bracing
Jul18Cool
Aug19Cool
Sep16Cool
Oct12Bracing
Nov9Bracing
Dec5Bracing

UV index in Tønder in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Tønder peaks around July 21 at about 5 (high) — a little sun protection helps at midday. It bottoms out near January 1 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJul 21UV 5Jan 1UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Moderate
Apr3Moderate
May5High
Jun5High
Jul6High
Aug5High
Sep4Moderate
Oct2Low
Nov1Low
Dec0Low
Location & terrain

Where is Tønder?

Tønder sits at 54.9°N, 8.9°E, 3 m above sea level, in Denmark. The nearest listed city is Aabenraa, 37 km away.

AabenraaFlensburgHusumHaderslevSønderborgSchleswigEsbjergKolding

Topography around Tønder

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

Within 3 km, the terrain around Tønder has only modest variations in elevation — a maximum elevation change of 16 m around an average of 2 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 50 m; within 80 km, only modest variations in elevation — a maximum elevation change of 123 m.

The land around Tønder is covered by cropland (43%) and grassland (37%) within 3 km, cropland (50%) and grassland (34%) within 16 km, and water (40%), cropland (29%) and grassland (20%) within 80 km.

3 km
16 m
16 km
50 m
80 km
123 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
May weather nearby: Aabenraa 37 km · Flensburg 40 km · Husum 51 km · Haderslev 53 km · Sønderborg 59 km · Schleswig 64 km · Esbjerg 65 km · Kolding 73 km

Denmark travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E / F / K
230 V · 50 Hz
Prices
≈ 92% of US
price level, 2025
GDP per capita
$76,970
2025
Happiness
7.5 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
0.8
per 100k, 2023
Road deaths
3.7
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 611
Religion
Evangelical Lutheran 71%other/none/unspecified 24%Muslim 4%

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 Tønder (54.9331°, 8.8667°, elevation 3 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).