Trenčín in Summer
In summer (June, July and August), Trenčín sees average daytime highs around 23°C and overnight lows near 13°C, with 276 mm of rain over about 38 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 23°C. The sky is clear or mostly clear about 31% of the time across summer, and the air most often feels dry.
Summer is Trenčín's best season of the year to visit on our travel score. For the whole year in context, see Trenčín's year-round climate.
- Avg daytime high
- 23°C
- warmest season of the year
- Avg overnight low
- 13°C
- Rainfall
- 276 mm
- 38 wet days
- Avg wind
- 9 km/h
- Travel score
- 6.5
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Trenčín in Summer
Across summer, daytime highs hold fairly steady around 23°C.
A typical summer day in Trenčín reaches about 23°C and drops to 13°C overnight. The warmest of the three months is July, the coolest June.
How summer really feels in Trenčín
Once humidity and wind are folded in, summer brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
summer sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Trenčín weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 1° / -4° | 48 | 10.1 | 7.2 | 8.5 | 0.0 |
| Feb | 3° / -3° | 45 | 9.6 | 6.1 | 9.8 | 0.0 |
| Mar | 8° / 0° | 53 | 10.7 | 3.5 | 11.6 | 1.3 |
| Apr | 14° / 4° | 54 | 10.1 | 1 | 13.4 | 4.0 |
| May | 18° / 9° | 83 | 12.8 | 0 | 15 | 5.6 |
| Jun | 22° / 12° | 90 | 13.2 | 0 | 15.9 | 6.1 |
| Jul | 24° / 14° | 105 | 13.2 | 0 | 15.5 | 6.5 |
| Aug | 24° / 13° | 81 | 11.3 | 0 | 14.2 | 6.8 |
| Sep | 19° / 10° | 76 | 10.8 | 0 | 12.4 | 5.8 |
| Oct | 13° / 5° | 57 | 9.8 | 0.3 | 10.5 | 3.5 |
| Nov | 7° / 2° | 54 | 10.1 | 3 | 8.9 | 0.8 |
| Dec | 2° / -3° | 51 | 10.2 | 5.6 | 8.1 | 0.0 |
Cloud cover in Summer
The sky is clear or mostly clear about 31% of the time across summer.
Chance of precipitation in Summer
Trenčín gets around 276 mm of rain over 38 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 9 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 15 h 36 min in early June to 13 h 18 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 5.3 kWh/m².
Is summer a good time to visit Trenčín?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit Trenčín for sightseeing.
What to pack for Trenčín in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Trenčín sees daytime highs around 23°C and nights near 13°C. Worth packing: light clothes, rain gear and sun protection. About 38 days see rain.
UV index in Trenčín in Summer
Clear-sky midday UV across summer averages around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Trenčín 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 2 | 4 | 5 | 6 | 7 | 8 | 6 | 4 | 3 | 1 | 1 |
| Level | Low | Low | Moderate | High | High | Very high | Very high | High | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Low |
| Mar | 4 | Moderate |
| Apr | 5 | High |
| May | 6 | High |
| Jun | 7 | Very high |
| Jul | 8 | Very high |
| Aug | 6 | High |
| Sep | 4 | Moderate |
| Oct | 3 | Moderate |
| Nov | 1 | Low |
| Dec | 1 | Low |
Air quality in Trenčín in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Trenčín is worst in June — around 22 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (December, 13 µg/m³).
Seasonal pattern from CAMS reanalysis, scaled to Trenčín's WHO annual average of 17.7 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 15 | 15 | 20 | 20 | 21 | 22 | 21 | 20 | 17 | 15 | 14 | 13 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 15 | Moderate |
| Feb | 15 | Moderate |
| Mar | 20 | Moderate |
| Apr | 20 | Moderate |
| May | 21 | Moderate |
| Jun | 22 | Moderate |
| Jul | 21 | Moderate |
| Aug | 20 | Moderate |
| Sep | 17 | Moderate |
| Oct | 15 | Moderate |
| Nov | 14 | Moderate |
| Dec | 13 | Moderate |
Where is Trenčín?
Trenčín sits at 48.9°N, 18.0°E, 217 m above sea level, in Slovakia. The nearest listed city is Dubnica nad Váhom, 11 km away.
Topography around Trenčín
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Trenčín.
Within 3 km, the terrain around Trenčín has only modest variations in elevation — a maximum elevation change of 208 m around an average of 241 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 865 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,529 m.
The land around Trenčín is covered by trees (37%), artificial surfaces (30%) and cropland (20%) within 3 km, trees (63%) within 16 km, and trees (53%) and cropland (31%) within 80 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
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 Trenčín (48.8945°, 18.0444°, elevation 217 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.