Trnava weather in May

In May, Trnava sees average daytime highs of 21°C and overnight lows near 10°C, with 66 mm of rain across 11.3 wet days and about 15 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 18 min at the start of May to 15 h 30 min by month's end. Set against the rest of the year, May is Trnava's 6th-clearest and 5th-windiest month. For the whole year in context, see Trnava's year-round climate.

Daytime high
21°
5th warmest
Overnight low
10°
8th coldest
Rainfall
66 mm
11.3 wet days
Daylight
15 hours
4:16 AM – 7:16 PM
Cloud cover
60%
6th clearest
Wind
12 km/h
5th windiest
Solar energy
5.45 kWh/m²
Travel score
6.2
out of 10

Trnava is city in Slovakia.

Air quality
Elevated
PM2.5 16.2 µg/m³ · 2019
Density
878/km²
people per km²
Founded
1211

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 Trnava reaches about 21°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 27°C. Set against its neighbours, May runs about 5°C warmer than April and about 4°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1199
2199
3209
4209
5209
6209
7209
8209
92010
102010
112010
122010
132010
142010
152010
162010
172110
182110
192111
202111
212111
222111
232111
242111
252211
262212
272212
282212
292212
302212
312212

How May really feels in Trnava

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.

Trnava 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 / -3°378.54.68.60.0
Feb / -2°347.83.89.90.2
Mar10° / 418.9211.62.2
Apr16° / 428.30.313.45.1
May21° / 10°6611.30156.2
Jun24° / 14°7611.4015.86.6
Jul26° / 16°8111.5015.56.5
Aug26° / 15°659.8014.16.8
Sep21° / 11°658.9012.46.6
Oct15° / 488.60.110.64.4
Nov / 479.2291.4
Dec / -2°4293.58.20.0

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 20% of May, with mostly cloudy or overcast conditions the remaining 52%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15149
25149
35050
45050
54852
64852
74852
84852
94753
104852
114852
124753
134753
144753
154753
164753
174753
184753
194852
204852
214852
224852
234753
244852
254753
264753
274753
284753
294753
304753
314753

Chance of precipitation in May

Any precipitation

Trnava gets around 66 mm of rain over 11.3 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 36% and peaks near 39% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
132
233
334
435
536
636
737
837
937
1037
1137
1237
1337
1437
1536
1636
1736
1835
1935
2035
2135
2235
2335
2435
2536
2636
2737
2837
2938
3039
3139

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 87% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19730
29640
39550
49550
59460
69460
79370
89370
99280
109280
119280
129280
139280
149190
159190
169190
1790100
1890100
1988111
2088111
2187121
2285132
2384142
2483152
2581163
2680173
2777194
2875205
2973225
3071236
3168257

Wind in May

Winds average 12 km/h in May.

Across May, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112calm
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1212calm
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm
3111calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 14 h 18 min at the start of May to 15 h 30 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 4:39 AM to 4:01 AM, and sunset from 6:55 PM to 7:33 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.34:396:55
214.34:376:56
314.44:366:57
414.44:346:59
514.54:327:00
614.54:317:02
714.64:297:03
814.64:287:05
914.74:267:06
1014.74:257:07
1114.84:237:09
1214.84:227:10
1314.94:207:12
1414.94:197:13
1514.94:187:14
1615.04:167:16
1715.04:157:17
1815.14:147:18
1915.14:127:20
2015.24:117:21
2115.24:107:22
2215.24:097:23
2315.34:087:25
2415.34:077:26
2515.44:067:27
2615.44:057:28
2715.44:047:29
2815.54:037:30
2915.54:027:31
3015.54:017:32
3115.54:017:33

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.45 kWh/m².

For context, solar energy here swings from a low near 0.84 kWh/m² to a high of 5.82 kWh/m² in June across the year — May's 5.45 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.4Bright
85.4Bright
95.4Bright
105.4Bright
115.4Bright
125.4Bright
135.4Bright
145.4Bright
155.4Bright
165.4Bright
175.4Bright
185.4Bright
195.4Bright
205.5Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.5Bright
265.6Bright
275.6Bright
285.6Bright
295.6Bright
305.7Bright
315.7Bright
Planning a trip in May

Is May a good time to visit Trnava?

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

6.2
Sightseeing
5th-best month of the year
3.6
Beach & pool
5th-best month of the year

May is a reasonable time to visit Trnava for sightseeing.

What to pack for Trnava in May

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

In May, Trnava sees daytime highs around 21°C and nights near 10°C. Worth packing: rain gear and sun protection. About 11 days see rain.

rain gearsun protection

UV index in Trnava 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 Trnava peaks around July 11 at about 8 (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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 11UV 8Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr6High
May6High
Jun7Very high
Jul8Very high
Aug6High
Sep4Moderate
Oct3Moderate
Nov1Low
Dec1Low

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

Seasonal pattern from CAMS reanalysis, scaled to Trnava's WHO annual average of 16.2 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateJun 1519 µg/m³Dec 1213 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb14Moderate
Mar19Moderate
Apr19Moderate
May18Moderate
Jun19Moderate
Jul18Moderate
Aug17Moderate
Sep15Moderate
Oct14Moderate
Nov13Moderate
Dec13Moderate
Location & terrain

Where is Trnava?

Trnava sits at 48.4°N, 17.6°E, 147 m above sea level, in Slovakia. The nearest listed city is Sereď, 15 km away.

PezinokPiešťanyŠaľaSenica

Topography around Trnava

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

Within 3 km, the terrain around Trnava has only modest variations in elevation — a maximum elevation change of 31 m around an average of 151 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 428 m; within 80 km, large variations in elevation — a maximum elevation change of 1,154 m.

The land around Trnava is covered by cropland (42%) and artificial surfaces (36%) within 3 km, cropland (78%) within 16 km, and cropland (54%) and trees (30%) within 80 km.

3 km
31 m
16 km
428 m
80 km
1,154 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Sereď 15 km · Hlohovec 17 km · Senec 22 km · Galanta 23 km · Pezinok 26 km · Piešťany 30 km · Šaľa 33 km · Senica 37 km

Slovakia travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / E / F
230 V · 50 Hz
Prices
≈ 58% of US
price level, 2025
GDP per capita
$28,544
2025
Happiness
6.3 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
1.1
per 100k, 2023
Road deaths
6.1
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 606
Religion
Roman Catholic 56%none 24%Evangelical Church of the Augsburg Confession 5%Greek Catholic 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 Trnava (48.3777°, 17.586°, elevation 147 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).