Novo Mesto weather in May

In May, Novo Mesto sees average daytime highs of 20°C and overnight lows near 10°C, with 112 mm of rain across 14.7 wet days and about 14.7 hours of daylight. It is the 5th-warmest and 3rd-wettest month of the year here.

Highs climb over the month, from about 19°C in the first days to 22°C by the end. The sky is clear or mostly clear about 27% of the time in May, and the air most often feels dry.

Daylight stretches from about 14 h 06 min at the start of May to 15 h 12 min by month's end. Set against the rest of the year, May is Novo Mesto's 5th-clearest and 4th-windiest month. For the whole year in context, see Novo Mesto's year-round climate.

Daytime high
20°
5th warmest
Overnight low
10°
8th coldest
Rainfall
112 mm
14.7 wet days
Daylight
14 h 42 min
4:34 AM – 7:17 PM
Cloud cover
60%
5th clearest
Wind
7 km/h
4th windiest
Solar energy
5.44 kWh/m²
Travel score
5.7
out of 10

Novo Mesto is town in Lower Carniola, Slovenia.

Air quality
Good
PM10 21.4 µg/m³ · 2019
Density
734/km²
people per km²
Founded
1365

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 19°C in the first days to 22°C by the end.

A typical May day in Novo Mesto reaches about 20°C in the afternoon and slips back to 10°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 26°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)
1198
2198
3199
4199
5199
6199
7199
8199
9199
10209
11209
122010
132010
142010
152010
162010
172010
182010
192010
202110
212111
222111
232111
242111
252111
262111
272211
282211
292212
302212
312212

How May really feels in Novo Mesto

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.

Novo Mesto weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -2°609.26.28.90.0
Feb / -2°728.85.610.10.5
Mar11° / 7410.53.811.62.8
Apr16° / 9012113.34.6
May20° / 10°11214.7014.75.7
Jun24° / 14°11513.4015.56.4
Jul26° / 15°10812.2015.26.5
Aug26° / 15°11211.6013.96.7
Sep21° / 11°12011.7012.36.2
Oct15° / 10610.10.610.74.7
Nov10° / 10611.32.99.31.9
Dec / -1°8810.25.28.50.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 22% of May, with mostly cloudy or overcast conditions the remaining 51%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14654
24654
34753
44654
54753
64753
74753
84852
94951
104951
114951
124852
134852
144852
154852
164852
174852
184951
194951
204951
214951
225050
235149
245149
255248
265248
275149
285149
295149
305149
315149

Chance of precipitation in May

Any precipitation

Novo Mesto gets around 112 mm of rain over 14.7 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 47% and peaks near 51% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
144
244
345
446
546
646
747
847
947
1047
1147
1247
1347
1447
1547
1647
1747
1847
1946
2046
2146
2247
2347
2447
2548
2648
2749
2849
2950
3050
3151

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 83% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19640
29640
39550
49550
59460
69370
79370
89280
99280
109190
119190
1290100
1390100
1489110
1589110
1687121
1786131
1885141
1983152
2082162
2180173
2278184
2377194
2475205
2573216
2671227
2768248
2865269
29632710
30602911
31573112

Wind in May

Winds average 7 km/h in May.

Across May, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 14 h 06 min at the start of May to 15 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 66 minutes over May. Sunrise moves from 4:55 AM to 4:20 AM, and sunset from 6:58 PM to 7:33 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.14:556:58
214.14:537:00
314.24:527:01
414.24:507:02
514.24:497:03
614.34:477:05
714.34:467:06
814.44:447:07
914.44:437:09
1014.54:427:10
1114.54:407:11
1214.64:397:12
1314.64:387:14
1414.64:367:15
1514.74:357:16
1614.74:347:17
1714.84:337:18
1814.84:327:20
1914.84:317:21
2014.94:307:22
2114.94:287:23
2214.94:277:24
2315.04:277:25
2415.04:267:26
2515.04:257:27
2615.14:247:28
2715.14:237:29
2815.14:227:30
2915.24:217:31
3015.24:217:32
3115.24:207:33

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.44 kWh/m².

For context, solar energy here swings from a low near 1.06 kWh/m² to a high of 5.92 kWh/m² in July across the year — May's 5.44 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.2Bright
35.2Bright
45.2Bright
55.2Bright
65.2Bright
75.2Bright
85.3Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.3Bright
145.4Bright
155.4Bright
165.4Bright
175.4Bright
185.5Bright
195.5Bright
205.5Bright
215.5Bright
225.5Bright
235.6Bright
245.6Bright
255.6Bright
265.7Bright
275.7Bright
285.7Bright
295.7Bright
305.7Bright
315.8Bright
Planning a trip in May

Is May a good time to visit Novo Mesto?

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

5.7
Sightseeing
5th-best month of the year
3.1
Beach & pool
5th-best month of the year

May is a reasonable time to visit Novo Mesto for sightseeing.

What to pack for Novo Mesto in May

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

In May, Novo Mesto sees daytime highs around 20°C and nights near 10°C. Pack rain gear. Worth having: sun protection. About 15 days see rain.

rain gearsun protection

UV index in Novo Mesto 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 Novo Mesto peaks around July 15 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 15UV 8Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar4Moderate
Apr7High
May6High
Jun8Very high
Jul8Very high
Aug7Very high
Sep5High
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Novo Mesto 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 Novo Mesto is worst in January — around 19 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateJan 1919 µg/m³Sep 1613 µg/m³
PM2.5 (µg/m³)Level
Jan19Moderate
Feb17Moderate
Mar19Moderate
Apr18Moderate
May15Moderate
Jun16Moderate
Jul14Moderate
Aug14Moderate
Sep13Moderate
Oct14Moderate
Nov14Moderate
Dec15Moderate
Location & terrain

Where is Novo Mesto?

Novo Mesto sits at 45.8°N, 15.2°E, 187 m above sea level, in Slovenia. The nearest listed city is Žumberak, 20 km away.

ŽumberakTrbovljeSamoborKarlovacCeljeZaprešićLjubljanaVelenje

Topography around Novo Mesto

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

Within 3 km, the terrain around Novo Mesto has only modest variations in elevation — a maximum elevation change of 124 m around an average of 202 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,034 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,492 m.

The land around Novo Mesto is covered by trees (47%) and grassland (22%) within 3 km, trees (70%) and grassland (22%) within 16 km, and trees (77%) within 80 km.

3 km
124 m
16 km
1,034 m
80 km
2,492 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Žumberak 20 km · Trbovlje 40 km · Samobor 43 km · Karlovac 46 km · Celje 48 km · Zaprešić 50 km · Ljubljana 58 km · Velenje 62 km

Slovenia travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 63% of US
price level, 2025
GDP per capita
$37,376
2025
Happiness
6.9 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
0.6
per 100k, 2023
Road deaths
5.1
per 100k/yr, 2019
Income group
High
World Bank
Religion
Catholic 69%atheist 14%Orthodox 4%non-believer/agnostic 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 Novo Mesto (45.804°, 15.1689°, elevation 187 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).