Oreoí, Greece experiences average highs of 21°C (70°F) and lows of 14°C (57°F) throughout the year. The climate is relatively dry, with only 7 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.
Oreoí, Greece Weather & Climate 2026
Monthly climate averages for Oreoí, Greece. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Apr–Oct 
Wetter season: Jan–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
7.6/10
Best: May, June, August, September, October
UV Index
5
Low
Temperature 21°C / 14°C
Feels Like 21°C / 14°C
Rainy Days 7
Rainfall 64 mm
Sunshine 10 h
Humidity 71%
Wind Speed 12 km/h
Dew Point 12°C
Snow Days 2 days
Frost Days 1 days
Hottest Month
31°C
July
Avg Low 24°C
Rain 3 days
Coldest Month
6°C
January
Avg High 12°C
Rain 11 days
Driest Month
3 days
July
Avg High 31°C
Avg Low 24°C
Windiest Month
14 km/h
August (Gusts 34)
Sea Temperature
15°C – 28°C
Warmest water: July (
27.6°C
)
Worst Time to Visit
Consider avoiding January, February, December due to frequent rain.
Sun Position
Sunrise 06:02
Daylight 14.9h
Sunset 20:55
Live conditions —
Oreoí on the map · live conditions
Oreoí, Greece
- Continent
- Europe
- Country
- Greece
- City
- Oreoí
- Population
- 1.3K
- Coordinates
- 38.95°, 23.09°
Seasonal Breakdown
Spring
Mar–May
Avg High 20°C
Avg Low 12°C
Rain 8 days/mo
1/3 best months
Summer
Jun–Aug
Avg High 30°C
Avg Low 23°C
Rain 4 days/mo
2/3 best months
Autumn
Sep–Nov
Avg High 22°C
Avg Low 16°C
Rain 8 days/mo
2/3 best months
Winter
Dec–Feb
Avg High 13°C
Avg Low 7°C
Rain 10 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
High Low Shaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 12°C / 6°C . Feb: 14°C / 7°C . Mar: 16°C / 8°C . Apr: 20°C / 11°C . May: 24°C / 16°C . Jun: 29°C / 21°C . Jul: 31°C / 24°C . Aug: 30°C / 24°C . Sep: 27°C / 21°C . Oct: 22°C / 16°C . Nov: 18°C / 12°C . Dec: 14°C / 8°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 100 mm. Feb: 73 mm. Mar: 82 mm. Apr: 57 mm. May: 42 mm. Jun: 24 mm. Jul: 35 mm. Aug: 31 mm. Sep: 104 mm. Oct: 55 mm. Nov: 76 mm. Dec: 90 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 80%. Feb: 79%. Mar: 75%. Apr: 71%. May: 67%. Jun: 62%. Jul: 58%. Aug: 60%. Sep: 67%. Oct: 76%. Nov: 80%. Dec: 81%.
Monthly Wind Speed
Wind Speed Gusts
Bar chart showing monthly wind speed. Jan: 12 km/h . Feb: 12 km/h . Mar: 12 km/h . Apr: 12 km/h . May: 12 km/h . Jun: 12 km/h . Jul: 13 km/h . Aug: 14 km/h . Sep: 13 km/h . Oct: 11 km/h . Nov: 11 km/h . Dec: 11 km/h .
Sunshine
Sunshine
Sunshine: Jan: 7h. Feb: 8h. Mar: 9h. Apr: 11h. May: 12h. Jun: 13h. Jul: 13h. Aug: 12h. Sep: 10h. Oct: 9h. Nov: 7h. Dec: 6h.
Sea Temperature
Sea Temperature swim
Line chart showing monthly sea temperature. Jan: 16°C . Feb: 15°C . Mar: 15°C . Apr: 17°C . May: 19°C . Jun: 24°C . Jul: 28°C . Aug: 28°C . Sep: 26°C . Oct: 23°C . Nov: 20°C . Dec: 18°C .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 3. Feb: UV 4. Mar: UV 5. Apr: UV 7. May: UV 7. Jun: UV 8. Jul: UV 8. Aug: UV 8. Sep: UV 6. Oct: UV 5. Nov: UV 3. Dec: UV 2.
Monthly Daylight Hours
Daylight 12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow Days Snowfall
Snow Days: Jan: 3 days. Feb: 1 days. Mar: 1 days. Apr: 0 days. May: 0 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 0 days. Nov: 0 days. Dec: 0 days.
Climate Trends
Average highs have stayed broadly stable across the available records. Average rainfall is trending wetter by about 11 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 33°C | Jul · 31°C |
| Coldest month | Feb 2025 · 6°C | Jan · 6°C |
| Wettest month | Dec 2025 · 131 mm | Sep · 104 mm |
| Windiest month | Aug 2025 · 14 km/h | Aug · 14 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 best
Excellent November
Good December
Fair | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 12°C / 6°C | 10°C / 3°C | 11days (100 mm) Wet | 6.7h Fair | 80% Humid | 2.6 Moderate | Fair | View Details |
| February | 14°C / 7°C | 12°C / 4°C | 10days (73 mm) Wet | 7.5h Good | 79% Humid | 3.6 Moderate | Fair | View Details |
| March | 16°C / 8°C | 15°C / 6°C | 10days (82 mm) Wet | 9.2h Good | 75% Muggy | 5.3 High | Good | View Details |
| April | 20°C / 11°C | 19°C / 10°C | 6days (57 mm) Good | 10.8h Excellent | 71% Muggy | 6.6 High | Good | View Details |
| May best | 24°C / 16°C | 25°C / 16°C | 7days (42 mm) Good | 11.9h Excellent | 67% Muggy | 7.3 Very High | Excellent | View Details |
| June best | 29°C / 21°C | 31°C / 23°C | 4days (24 mm) Good | 13h Excellent | 62% Muggy | 8.1 Very High | Excellent | View Details |
| July | 31°C / 24°C | 34°C / 26°C | 3days (35 mm) Excellent | 13h Excellent | 58% Moderate | 8.2 Very High | Good | View Details |
| August best | 30°C / 24°C | 33°C / 26°C | 4days (31 mm) Good | 12.4h Excellent | 60% Moderate | 7.5 Very High | Excellent | View Details |
| September best | 27°C / 21°C | 28°C / 22°C | 7days (104 mm) Good | 10.3h Excellent | 67% Muggy | 6 High | Excellent | View Details |
| October best | 22°C / 16°C | 22°C / 16°C | 7days (55 mm) Good | 8.6h Good | 76% Humid | 4.7 Moderate | Excellent | View Details |
| November | 18°C / 12°C | 17°C / 11°C | 9days (76 mm) Wet | 6.8h Fair | 80% Humid | 3 Moderate | Good | View Details |
| December | 14°C / 8°C | 12°C / 6°C | 10days (90 mm) Wet | 6.2h Fair | 81% Humid | 2.3 Moderate | Fair | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Oreoí are May, June, August, September, October, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Oreoí, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Oreoí is July, with average daytime highs of 31°C (88°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Oreoí is January, with average overnight lows of 6°C (42°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Oreoí is September, averaging 104mm of precipitation across 7 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Oreoí runs through January, February, March, December, with the heaviest rainfall in January. Based on 10-year averages for Oreoí.
Oreoí receives approximately 116 sunshine hours per year. The sunniest month is June with around 13 hours. Based on climate data for Oreoí.
The least favorable months to visit Oreoí are January, February, December, primarily due to frequent rain. For the best conditions, consider May, June, August, September, October instead.
The annual average UV index in Oreoí is 5, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Oreoí 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 26°C (79°F), which is warm and comfortable for swimming and water activities.
Yes, Oreoí receives snow. Months with snowfall average 2 snow days and 5 cm (2 in) of accumulation, with about 1 frost days during winter.
Average wind speeds in Oreoí are 12 km/h (7 mph). The windiest month is August with peak winds reaching 14 km/h (8 mph) (gusts up to 34 km/h / 21 mph).
Oreoí averages 10 clear-sky days per month with overall cloud cover around 42%. The clearest skies occur in July.
The annual average dew point in Oreoí is 12°C (54°F), which feels pleasant with low humidity. Outdoor activities are comfortable year-round from a humidity standpoint.
Oreoí 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 Oreoí ranges from 14°C (57°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 Oreoí. It earns a climate score of 8.6/10 with Excellent.
For June in Oreoí, pack Breathable clothing, Sunscreen (SPF 30+), Sun hat, Sunglasses, Sandals. With average highs of 29°C (84°F) and 4 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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