Riesi, Italy experiences average highs of 22°C (72°F) and lows of 11°C (52°F) throughout the year. The climate is relatively dry, with only 6 rainy days per month on average. Sunshine is abundant, averaging about 10 hours per day. Average highs have stayed broadly stable across the available records.
Riesi, Italy Weather & Climate 2026
Monthly climate averages for Riesi, Italy. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Apr–Sep 
Wetter season: Jan–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
7.7/10
Best: May, June, August, September
UV Index
6
High
Temperature 22°C / 11°C
Feels Like 21°C / 10°C
Rainy Days 6
Rainfall 42 mm
Sunshine 10 h
Humidity 71%
Wind Speed 17 km/h
Dew Point 11°C
Frost Days 2 days
Hottest Month
33°C
July
Avg Low19°C
Rain0days
Coldest Month
4°C
January
Avg High13°C
Rain7days
Driest Month
0days
July
Avg High33°C
Avg Low19°C
Windiest Month
19 km/h
March (Gusts 40)
Sea Temperature
15°C – 27°C
Warmest water: August (
26.5°C
)
Worst Time to Visit
Consider avoiding January, February, March, December due to less favorable weather conditions.
Sun Position
Sunrise 05:44
Daylight 14.7h
Sunset 20:27
Live conditions—
Riesi on the map · live conditions
Riesi, Italy
- Continent
- Europe
- Country
- Italy
- City
- Riesi
- Population
- 11.5K
- Elevation
- 330 m
- Coordinates
- 37.28°, 14.08°
Seasonal Breakdown
Spring
Mar–May
Avg High 20°C
Avg Low 9°C
Rain 6 days/mo
1/3 best months
Summer
Jun–Aug
Avg High 32°C
Avg Low 18°C
Rain 2 days/mo
2/3 best months
Autumn
Sep–Nov
Avg High 23°C
Avg Low 13°C
Rain 8 days/mo
1/3 best months
Winter
Dec–Feb
Avg High 14°C
Avg Low 5°C
Rain 7 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: 13°C / 4°C . Feb: 14°C / 5°C . Mar: 16°C / 6°C . Apr: 20°C / 8°C . May: 24°C / 12°C . Jun: 30°C / 17°C . Jul: 33°C / 19°C . Aug: 32°C / 20°C . Sep: 28°C / 17°C . Oct: 23°C / 14°C . Nov: 18°C / 10°C . Dec: 15°C / 6°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 44 mm. Feb: 60 mm. Mar: 49 mm. Apr: 28 mm. May: 39 mm. Jun: 10 mm. Jul: 1 mm. Aug: 11 mm. Sep: 34 mm. Oct: 77 mm. Nov: 103 mm. Dec: 45 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 81%. Feb: 79%. Mar: 77%. Apr: 70%. May: 65%. Jun: 56%. Jul: 52%. Aug: 59%. Sep: 70%. Oct: 78%. Nov: 83%. Dec: 82%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 17 km/h . Feb: 17 km/h . Mar: 19 km/h . Apr: 19 km/h . May: 18 km/h . Jun: 17 km/h . Jul: 17 km/h . Aug: 16 km/h . Sep: 16 km/h . Oct: 16 km/h . Nov: 16 km/h . Dec: 17 km/h .
Sunshine
Sunshine
Sunshine: Jan: 8h. Feb: 9h. Mar: 10h. Apr: 11h. May: 12h. Jun: 13h. Jul: 13h. Aug: 12h. Sep: 11h. Oct: 9h. Nov: 8h. Dec: 7h.
Sea Temperature
Sea Temperatureswim
Line chart showing monthly sea temperature. Jan: 16°C . Feb: 15°C . Mar: 16°C . Apr: 17°C . May: 19°C . Jun: 24°C . Jul: 26°C . Aug: 27°C . Sep: 26°C . Oct: 23°C . Nov: 20°C . Dec: 17°C .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 3. Feb: UV 4. Mar: UV 6. Apr: UV 7. May: UV 8. Jun: UV 8. Jul: UV 9. Aug: UV 8. Sep: UV 7. Oct: UV 5. Nov: UV 4. Dec: UV 3.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Climate Trends
Average highs have stayed broadly stable across the available records. Average rainfall is trending wetter by about 21 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 33°C | Jul · 33°C |
| Coldest month | Jan 2025 · 6°C | Jan · 4°C |
| Wettest month | Feb 2025 · 114 mm | Nov · 103 mm |
| Windiest month | Mar 2025 · 18 km/h | Mar · 19 km/h |
Month-by-Month Weather Table
January
Fair 
February
Fair March
Good April
Good May best
Excellent June best
Excellent July
Good August best
Excellent September best
Excellent October
Excellent November
Good December
Fair | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 13°C / 4°C | 10°C / 1°C | 7days (44 mm) Good | 8.1h Good | 81% Humid | 3.3 Moderate | Fair | View Details |
| February | 14°C / 5°C | 12°C / 2°C | 6days (60 mm) Good | 8.8h Good | 79% Humid | 4.1 Moderate | Fair | View Details |
| March | 16°C / 6°C | 14°C / 3°C | 8days (49 mm) Wet | 10.1h Excellent | 77% Humid | 5.7 High | Good | View Details |
| April | 20°C / 8°C | 18°C / 6°C | 5days (28 mm) Good | 11.2h Excellent | 70% Muggy | 6.9 High | Good | View Details |
| May best | 24°C / 12°C | 24°C / 11°C | 5days (39 mm) Good | 12.2h Excellent | 65% Muggy | 7.7 Very High | Excellent | View Details |
| June best | 30°C / 17°C | 31°C / 17°C | 2days (10 mm) Excellent | 13.3h Excellent | 56% Moderate | 8.4 Very High | Excellent | View Details |
| July | 33°C / 19°C | 34°C / 20°C | 0days (1 mm) Excellent | 13.4h Excellent | 52% Moderate | 8.6 Very High | Good | View Details |
| August best | 32°C / 20°C | 34°C / 21°C | 3days (11 mm) Excellent | 12.3h Excellent | 59% Moderate | 8 Very High | Excellent | View Details |
| September best | 28°C / 17°C | 29°C / 18°C | 5days (34 mm) Good | 10.9h Excellent | 70% Muggy | 6.6 High | Excellent | View Details |
| October | 23°C / 14°C | 23°C / 13°C | 8days (77 mm) Wet | 9.2h Good | 78% Humid | 5.2 High | Excellent | View Details |
| November | 18°C / 10°C | 17°C / 8°C | 11days (103 mm) Wet | 7.7h Good | 83% Humid | 3.6 Moderate | Good | View Details |
| December | 15°C / 6°C | 12°C / 3°C | 7days (45 mm) Good | 7.4h Good | 82% Humid | 3 Moderate | Fair | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Riesi are May, June, August, September, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Riesi, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Riesi is July, with average daytime highs of 33°C (92°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Riesi is January, with average overnight lows of 4°C (39°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Riesi is November, averaging 103mm of precipitation across 11 rainy days. An umbrella or waterproof jacket is essential.
Riesi receives approximately 125 sunshine hours per year. The sunniest month is July with around 13 hours. Based on climate data for Riesi.
The least favorable months to visit Riesi are January, February, March, December, primarily due to less favorable weather conditions. For the best conditions, consider May, June, August, September instead.
The annual average UV index in Riesi is 6, classified as high. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Riesi is 71%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes — sea temperatures in June, July, August, September, October average 25°C (77°F), which is warm and comfortable for swimming and water activities.
Riesi rarely sees significant snowfall but does experience frost, averaging 2 frost days during the colder months.
Average wind speeds in Riesi are 17 km/h (11 mph). The windiest month is March with peak winds reaching 19 km/h (12 mph) (gusts up to 40 km/h / 25 mph).
Riesi averages 11 clear-sky days per month with overall cloud cover around 37%. The clearest skies occur in July.
The annual average dew point in Riesi is 11°C (52°F), which feels pleasant with low humidity. Outdoor activities are comfortable year-round from a humidity standpoint.
Riesi has a Hot-Summer Mediterranean climate, classified as Csa 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 Riesi ranges from 10°C (50°F) to 21°C (70°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 Riesi. It earns a climate score of 9.8/10 with Excellent.
For June in Riesi, pack Breathable clothing, Sunscreen (SPF 30+), Sun hat, Sunglasses, Sandals. With average highs of 30°C (87°F) and 2 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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