Semič, Slovenia experiences average highs of 17°C (63°F) and lows of 8°C (46°F) throughout the year. Rainfall is moderate, averaging about 11 rainy days per month. Average highs have warmed by 0.7°C (1.3°F) across the available records.
Semič, Slovenia Weather & Climate 2026
Monthly climate averages for Semič, Slovenia. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Dec 
Wetter season: May–Nov At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
5.6/10
Best: June, July, August, September, October
UV Index
4
Low
Temperature 17°C / 8°C
Feels Like 16°C / 7°C
Rainy Days 11
Rainfall 101 mm
Sunshine 8 h
Humidity 80%
Wind Speed 10 km/h
Dew Point 9°C
Snow Days 6 days
Frost Days 10 days
Hottest Month
28°C
July
Avg Low17°C
Rain12days
Coldest Month
-1°C
January
Avg High6°C
Rain10days
Driest Month
9days
February
Avg High9°C
Avg Low1°C
Windiest Month
12 km/h
March (Gusts 36)
Worst Time to Visit
Consider avoiding January, February, December due to very cold temperatures.
Sun Position
Sunrise 05:11
Daylight 15.7h
Sunset 20:51
Live conditions—
Semič on the map · live conditions
Semič, Slovenia
- Continent
- Europe
- Country
- Slovenia
- City
- Semič
- Population
- 2K
- Coordinates
- 45.65°, 15.18°
Seasonal Breakdown
Spring
Mar–May
Avg High 16°C
Avg Low 6°C
Rain 13 days/mo
Summer
Jun–Aug
Avg High 27°C
Avg Low 17°C
Rain 12 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 17°C
Avg Low 9°C
Rain 11 days/mo
2/3 best months
Winter
Dec–Feb
Avg High 7°C
Avg Low 0°C
Rain 10 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 6°C / -1°C . Feb: 9°C / 1°C . Mar: 12°C / 3°C . Apr: 17°C / 6°C . May: 20°C / 10°C . Jun: 26°C / 15°C . Jul: 28°C / 17°C . Aug: 27°C / 17°C . Sep: 22°C / 13°C . Oct: 17°C / 9°C . Nov: 11°C / 4°C . Dec: 7°C / 1°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 76 mm. Feb: 76 mm. Mar: 76 mm. Apr: 84 mm. May: 147 mm. Jun: 101 mm. Jul: 114 mm. Aug: 107 mm. Sep: 127 mm. Oct: 97 mm. Nov: 116 mm. Dec: 86 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 84%. Feb: 81%. Mar: 75%. Apr: 74%. May: 80%. Jun: 75%. Jul: 72%. Aug: 75%. Sep: 80%. Oct: 84%. Nov: 88%. Dec: 88%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 10 km/h . Feb: 12 km/h . Mar: 12 km/h . Apr: 12 km/h . May: 11 km/h . Jun: 10 km/h . Jul: 10 km/h . Aug: 10 km/h . Sep: 10 km/h . Oct: 10 km/h . Nov: 10 km/h . Dec: 9 km/h .
Sunshine
Sunshine
Sunshine: Jan: 5h. Feb: 6h. Mar: 8h. Apr: 10h. May: 10h. Jun: 12h. Jul: 12h. Aug: 11h. Sep: 9h. Oct: 7h. Nov: 4h. Dec: 4h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 2. Feb: UV 2. Mar: UV 4. Apr: UV 5. May: UV 6. Jun: UV 7. Jul: UV 7. Aug: UV 6. Sep: UV 4. Oct: UV 3. Nov: UV 2. Dec: UV 1.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow DaysSnowfall
Snow Days: Jan: 9 days. Feb: 6 days. Mar: 5 days. Apr: 2 days. May: 0 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 0 days. Nov: 4 days. Dec: 7 days.
Climate Trends
Average highs have warmed by 0.7°C (1.3°F) across the available records. Average rainfall is trending drier by about 9 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jun 2025 · 28°C | Jul · 28°C |
| Coldest month | Feb 2025 · 0°C | Jan · -1°C |
| Wettest month | Jul 2025 · 161 mm | May · 147 mm |
| Windiest month | Mar 2025 · 13 km/h | Mar · 12 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Poor April
Fair May
Wet June best
Excellent July best
Excellent August best
Excellent September best
Excellent October best
Good November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 6°C / -1°C | 3°C / -5°C | 10days (76 mm) Wet | 5h Fair | 84% Humid | 1.6 Low | Poor | View Details |
| February | 9°C / 1°C | 6°C / -3°C | 9days (76 mm) Wet | 6.1h Fair | 81% Humid | 2.2 Moderate | Poor | View Details |
| March | 12°C / 3°C | 10°C / 0°C | 11days (76 mm) Wet | 8.2h Good | 75% Muggy | 3.6 Moderate | Poor | View Details |
| April | 17°C / 6°C | 15°C / 4°C | 11days (84 mm) Wet | 9.6h Good | 74% Muggy | 4.9 Moderate | Fair | View Details |
| May | 20°C / 10°C | 20°C / 9°C | 18days (147 mm) Wet | 10.1h Excellent | 80% Humid | 5.9 High | Wet | View Details |
| June best | 26°C / 15°C | 28°C / 16°C | 12days (101 mm) Wet | 11.9h Excellent | 75% Muggy | 6.7 High | Excellent | View Details |
| July best | 28°C / 17°C | 30°C / 19°C | 12days (114 mm) Wet | 12.4h Excellent | 72% Muggy | 6.7 High | Excellent | View Details |
| August best | 27°C / 17°C | 29°C / 18°C | 12days (107 mm) Wet | 11h Excellent | 75% Muggy | 6 High | Excellent | View Details |
| September best | 22°C / 13°C | 23°C / 13°C | 11days (127 mm) Wet | 8.8h Good | 80% Humid | 4.4 Moderate | Excellent | View Details |
| October best | 17°C / 9°C | 17°C / 8°C | 9days (97 mm) Wet | 6.9h Fair | 84% Humid | 3.1 Moderate | Good | View Details |
| November | 11°C / 4°C | 9°C / 2°C | 12days (116 mm) Wet | 4.3h Fair | 88% Very Muggy | 1.9 Low | Poor | View Details |
| December | 7°C / 1°C | 5°C / -2°C | 10days (86 mm) Wet | 4.3h Fair | 88% Very Muggy | 1.3 Low | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Semič are June, July, August, September, October, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Semič, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Semič is July, with average daytime highs of 28°C (82°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Semič is January, with average overnight lows of -1°C (29°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Semič is May, averaging 147mm of precipitation across 18 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Semič runs through May, June, July, August, with the heaviest rainfall in May. Based on 10-year averages for Semič.
Semič receives approximately 99 sunshine hours per year. The sunniest month is July with around 12 hours. Based on climate data for Semič.
The least favorable months to visit Semič are January, February, December, primarily due to very cold temperatures. For the best conditions, consider June, July, August, September, October instead.
The annual average UV index in Semič is 4, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Semič is 80%, classified as humid. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes, Semič receives snow. Months with snowfall average 6 snow days and 13 cm (5 in) of accumulation, with about 10 frost days during winter.
Average wind speeds in Semič are 10 km/h (6 mph). The windiest month is March with peak winds reaching 12 km/h (8 mph) (gusts up to 36 km/h / 22 mph).
Semič averages 4 clear-sky days per month with overall cloud cover around 60%. The clearest skies occur in August.
The annual average dew point in Semič is 9°C (48°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Semič has a Humid Subtropical climate, classified as Cfa under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Semič ranges from 7°C (45°F) to 16°C (61°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
Yes, June is a great time to visit Semič. It earns a climate score of 8.4/10 with Excellent.
For June in Semič, pack Umbrella, Waterproof jacket, Breathable clothing, Sunscreen (SPF 30+), Sun hat. With average highs of 26°C (79°F) and 12 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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