Semmering weather in May

In May, Semmering sees average daytime highs of 16°C and overnight lows near 7°C, with 133 mm of precipitation across 18.9 wet days and about 14.9 hours of daylight. It is the 5th-warmest and 4th-wettest month of the year here.

Highs climb over the month, from about 15°C in the first days to 17°C by the end. The sky is clear or mostly clear about 17% 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 24 min by month's end. Set against the rest of the year, May is Semmering's 8th-clearest and 5th-windiest month. For the whole year in context, see Semmering's year-round climate.

Daytime high
16°
5th warmest
Overnight low
8th coldest
Precipitation
133 mm
18.9 wet days
Daylight
14 h 54 min
4:26 AM – 7:20 PM
Cloud cover
69%
8th clearest
Wind
9 km/h
5th windiest
Solar energy
5.2 kWh/m²
Travel score
3.9
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 15°C in the first days to 17°C by the end.

A typical May day in Semmering reaches about 16°C in the afternoon and slips back to 7°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 9°C and 22°C. Set against its neighbours, May runs about 4°C warmer than April and about 4°C cooler than June.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
1155
2156
3156
4156
5156
6156
7156
8156
9156
10156
11157
12157
13157
14157
15167
16167
17167
18167
19167
20167
21168
22168
23168
24178
25178
26178
27178
28179
29179
30179
31189

How May really feels in Semmering

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.

Semmering weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -5°5711.310.78.70.0
Feb / -4°5310.410.49.90.0
Mar / -1°7714.29.911.60.5
Apr11° / 8514.4513.32.5
May16° / 13318.90.514.93.9
Jun19° / 11°14218.5015.74.9
Jul21° / 12°14919.2015.45.2
Aug21° / 12°13816.7014.15.4
Sep16° / 11214.10.312.44.5
Oct11° / 78122.510.62.7
Nov / 6310.96.89.10.5
Dec / -4°5611.610.18.30.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 17% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 18% of May, with mostly cloudy or overcast conditions the remaining 66%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13862
23862
33763
43763
53763
63664
73664
83664
93664
103466
113466
123466
133466
143367
153367
163367
173367
183367
193169
203169
213169
223268
233466
243466
253466
263466
273565
283565
293565
303565
313466

Chance of precipitation in May

Any precipitationSnow

Semmering gets around 133 mm of rain and snow over 18.9 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 60% and peaks near 63% on the wettest days, and about 1 day brings snow.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1563
2573
3572
4582
5592
6592
7602
8602
9602
10612
11612
12612
13612
14612
15612
16612
17612
18612
19602
20602
21602
22602
23612
24611
25611
26621
27621
28631
29631
30631
31631

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 96% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
15991
16991
17991
18982
19973
20973
21964
22955
23946
24937
25928
26919
279010
288911
298812
308614
318515

Wind in May

Winds average 9 km/h in May.

Across May, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
1610calm
1710calm
1810calm
1910calm
2010calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 14 h 12 min at the start of May to 15 h 24 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 4:48 AM to 4:11 AM, and sunset from 7:00 PM to 7:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.24:487:00
214.24:467:01
314.34:457:03
414.34:437:04
514.44:417:05
614.44:407:07
714.54:387:08
814.54:377:10
914.64:357:11
1014.64:347:12
1114.74:327:14
1214.74:317:15
1314.84:307:16
1414.84:287:18
1514.94:277:19
1614.94:267:20
1715.04:247:21
1815.04:237:23
1915.04:227:24
2015.14:217:25
2115.14:207:26
2215.14:197:28
2315.24:187:29
2415.24:177:30
2515.34:167:31
2615.34:157:32
2715.34:147:33
2815.44:137:34
2915.44:127:36
3015.44:117:37
3115.44:117:38

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.2 kWh/m².

For context, solar energy here swings from a low near 1.01 kWh/m² to a high of 5.52 kWh/m² in June across the year — May's 5.2 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
45.1Bright
55.1Bright
65.1Bright
75.1Bright
85.1Bright
95.1Bright
105.1Bright
115.1Bright
125.1Bright
135.1Bright
145.1Bright
155.1Bright
165.1Bright
175.1Bright
185.2Bright
195.2Bright
205.2Bright
215.2Bright
225.2Bright
235.3Bright
245.3Bright
255.3Bright
265.3Bright
275.3Bright
285.4Bright
295.4Bright
305.4Bright
315.4Bright
Planning a trip in May

Is May a good time to visit Semmering?

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

3.9
Sightseeing
5th-best month of the year
0.4
Beach & pool
5th-best month of the year

May is a weaker month for outdoor sightseeing in Semmering.

What to pack for Semmering in May

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

In May, Semmering sees daytime highs around 16°C and nights near 7°C. Pack rain gear. Worth having: a warm layer and sun protection. About 19 days see rain.

rain geara warm layersun protection

UV index in Semmering 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 Semmering peaks around July 16 at about 8 (very high) — sunscreen, a hat and midday shade are essential. 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 16UV 8Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr6High
May6High
Jun8Very high
Jul8Very high
Aug7Very high
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Semmering 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 Semmering is worst in June — around 15 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJun 1415 µg/m³Nov 1110 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb11Good
Mar14Moderate
Apr15Moderate
May14Moderate
Jun15Moderate
Jul13Moderate
Aug13Moderate
Sep11Good
Oct10Good
Nov10Good
Dec12Good
Location & terrain

Where is Semmering?

Semmering sits at 47.6°N, 15.8°E, 0 m above sea level, in Austria. The nearest listed city is Wiener Neustadt, 36 km away.

Wiener NeustadtBadenEisenzickenEisenstadtSopronMödlingPerchtoldsdorfAndritz

Topography around Semmering

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

Within 3 km, the terrain around Semmering has large variations in elevation — a maximum elevation change of 904 m around an average of 1,024 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,667 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,142 m.

The land around Semmering is covered by trees (85%) within 3 km, trees (79%) within 16 km, and trees (61%) within 80 km.

3 km
904 m
16 km
1,667 m
80 km
2,142 m
treesgrasslandcroplandartificial surfaceswaterwetland
May weather nearby: Wiener Neustadt 36 km · Baden 51 km · Eisenzicken 51 km · Eisenstadt 57 km · Sopron 57 km · Mödling 61 km · Perchtoldsdorf 63 km · Andritz 65 km

Austria travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 82% of US
price level, 2025
GDP per capita
$62,930
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
99%
of population, 2024
Homicide rate
0.9
per 100k, 2023
Road deaths
4.9
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 616
Religion
Roman Catholic 55%none 22%Muslim 8%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 Semmering (47.6335°, 15.8299°, elevation 0 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).