Jablonec nad Nisou weather in May

In May, Jablonec nad Nisou sees average daytime highs of 16°C and overnight lows near 7°C, with 93 mm of precipitation across 15.2 wet days and about 15.2 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 19% of the time in May, and the air most often feels dry.

Daylight stretches from about 14 h 30 min at the start of May to 15 h 54 min by month's end. Set against the rest of the year, May is Jablonec nad Nisou's 6th-clearest and 8th-windiest month. For the whole year in context, see Jablonec nad Nisou's year-round climate.

Daytime high
16°
5th warmest
Overnight low
8th coldest
Precipitation
93 mm
15.2 wet days
Daylight
15 h 18 min
4:18 AM – 7:34 PM
Cloud cover
67%
6th clearest
Wind
10 km/h
8th windiest
Solar energy
5.06 kWh/m²
Travel score
4.4
out of 10

Jablonec nad Nisou is city in Czechia.

Air quality
Good
PM10 15.8 µg/m³ · 2019
Density
1,472/km²
people per km²
Founded
1356

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 15°C in the first days to 17°C by the end.

A typical May day in Jablonec nad Nisou 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 10°C and 22°C. Set against its neighbours, May runs about 5°C warmer than April and about 3°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
11156
12156
13167
14167
15167
16167
17167
18167
19167
20167
21167
22178
23178
24178
25178
26178
27178
28178
29188
30189
31189

How May really feels in Jablonec nad Nisou

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.

Jablonec nad Nisou 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-0° / -5°8814.511.98.20.0
Feb / -4°6912.19.29.70.0
Mar / -2°8114.18.411.50.3
Apr11° / 5912.42.913.52.6
May16° / 9315.20.215.24.4
Jun19° / 10°10515.6016.25.2
Jul21° / 12°12916.5015.85.5
Aug21° / 12°10514.4014.35.8
Sep16° / 8612.4012.44.6
Oct11° / 74121.110.42.3
Nov / 7312.25.68.70.2
Dec / -4°8114.211.37.80.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 19% 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 66%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13763
23763
33664
43565
53565
63466
73466
83565
93565
103466
113367
123466
133466
143466
153466
163466
173466
183268
193367
203367
213367
223367
233466
243466
253466
263565
273565
283565
293565
303763
313763

Chance of precipitation in May

Any precipitationSnow

Jablonec nad Nisou gets around 93 mm of rain and snow over 15.2 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 49% and peaks near 50% on the wettest days, and about 0 day brings snow.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1462
2472
3471
4481
5481
6481
7491
8491
9491
10491
11491
12491
13491
14491
15491
16491
17481
18481
19481
20481
21481
22490
23490
24490
25490
26490
27490
28500
29500
30500
31500

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 (%)Humid (%)
110000
210000
310000
410000
510000
610000
79910
89910
99910
109910
119910
129910
139910
149910
159820
169820
179820
189730
199730
209640
219640
229550
239460
249460
259370
269280
279190
289091
2989101
3088111
3188111

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 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
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 30 min at the start of May to 15 h 54 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 4:43 AM to 4:00 AM, and sunset from 7:10 PM to 7:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.54:437:10
214.54:417:12
314.64:397:13
414.64:377:15
514.74:357:17
614.74:347:18
714.84:327:20
814.94:307:21
914.94:297:23
1015.04:277:24
1115.04:257:26
1215.14:247:28
1315.14:227:29
1415.24:217:31
1515.24:197:32
1615.34:187:34
1715.34:167:35
1815.44:157:36
1915.44:137:38
2015.54:127:39
2115.54:117:41
2215.54:107:42
2315.64:087:43
2415.64:077:45
2515.74:067:46
2615.74:057:47
2715.74:047:48
2815.84:037:50
2915.84:027:51
3015.84:017:52
3115.94:007:53

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.06 kWh/m².

For context, solar energy here swings from a low near 0.7 kWh/m² to a high of 5.3 kWh/m² in June across the year — May's 5.06 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.9Bright
44.9Bright
54.9Bright
64.9Bright
74.9Bright
84.9Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
135.0Bright
145.0Bright
155.1Bright
165.1Bright
175.1Bright
185.1Bright
195.1Bright
205.1Bright
215.2Bright
225.2Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.3Bright
285.3Bright
295.3Bright
305.3Bright
315.3Bright
Planning a trip in May

Is May a good time to visit Jablonec nad Nisou?

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

4.4
Sightseeing
5th-best month of the year
0.6
Beach & pool
5th-best month of the year

May is a reasonable time to visit Jablonec nad Nisou for sightseeing.

What to pack for Jablonec nad Nisou in May

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

In May, Jablonec nad Nisou sees daytime highs around 16°C and nights near 7°C. Pack rain gear. Worth having: a warm layer and sun protection. About 15 days see rain.

rain geara warm layersun protection

UV index in Jablonec nad Nisou 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 Jablonec nad Nisou peaks around June 20 at about 7 (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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighHighModerateLowJun 20UV 7Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr4Moderate
May6High
Jun7Very high
Jul7High
Aug6High
Sep5Moderate
Oct2Moderate
Nov1Low
Dec1Low

Air quality in Jablonec nad Nisou 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 Jablonec nad Nisou is worst in June — around 18 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodJun 1617 µg/m³Dec 1112 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb14Moderate
Mar17Moderate
Apr17Moderate
May16Moderate
Jun18Moderate
Jul16Moderate
Aug17Moderate
Sep15Moderate
Oct13Moderate
Nov12Good
Dec12Good
Location & terrain

Where is Jablonec nad Nisou?

Jablonec nad Nisou sits at 50.7°N, 15.2°E, 475 m above sea level, in Czechia. The nearest listed city is Liberec, 9.0 km away.

ZittauJičínMladá BoleslavJelenia GóraLubańČeská Lípa

Topography around Jablonec nad Nisou

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

Within 3 km, the terrain around Jablonec nad Nisou has significant variations in elevation — a maximum elevation change of 362 m around an average of 552 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 860 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,572 m.

The land around Jablonec nad Nisou is covered by trees (69%) within 3 km, trees (69%) within 16 km, and trees (45%) and cropland (34%) within 80 km.

3 km
362 m
16 km
860 m
80 km
1,572 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Liberec 9.0 km · Bogatynia 25 km · Zittau 32 km · Jičín 34 km · Mladá Boleslav 40 km · Jelenia Góra 44 km · Lubań 45 km · Česká Lípa 45 km

Czechia travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / E
230 V · 50 Hz
Prices
≈ 59% of US
price level, 2025
GDP per capita
$35,917
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
0.8
per 100k, 2023
Road deaths
5.9
per 100k/yr, 2019
Income group
High
World Bank
English
High
EF EPI 582
Religion
none 48%believers unaffiliated with a religious society 9%Roman Catholic 7%other believers belonging to a church or religious society 6%

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 Jablonec nad Nisou (50.7243°, 15.1711°, elevation 475 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).