Grenay, France experiences average highs of 15°C (59°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 1.1°C (2.0°F) across the available records.
Grenay, France Weather & Climate 2026
Monthly climate averages for Grenay, France. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Sep 
Wetter season: Mar–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
5.6/10
Best: June, July, August
UV Index
4
Low
Temperature 15°C / 8°C
Feels Like 13°C / 5°C
Rainy Days 11
Rainfall 60 mm
Sunshine 8 h
Humidity 78%
Wind Speed 20 km/h
Dew Point 8°C
Snow Days 2 days
Frost Days 6 days
Hottest Month
23°C
August
Avg Low15°C
Rain10days
Coldest Month
2°C
January
Avg High7°C
Rain11days
Driest Month
9days
July
Avg High23°C
Avg Low14°C
Windiest Month
23 km/h
February (Gusts 45)
Worst Time to Visit
Consider avoiding January, February, November, December due to very cold temperatures, frequent rain.
Sun Position
Sunrise 05:38
Daylight 16.4h
Sunset 22:03
Live conditions—
Grenay on the map · live conditions
Grenay, France
- Continent
- Europe
- Country
- France
- City
- Grenay
- Population
- 6.5K
- Coordinates
- 50.45°, 2.75°
Seasonal Breakdown
Spring
Mar–May
Avg High 15°C
Avg Low 6°C
Rain 11 days/mo
Summer
Jun–Aug
Avg High 23°C
Avg Low 14°C
Rain 10 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 16°C
Avg Low 9°C
Rain 11 days/mo
Winter
Dec–Feb
Avg High 8°C
Avg Low 3°C
Rain 11 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: 7°C / 2°C . Feb: 9°C / 3°C . Mar: 11°C / 4°C . Apr: 15°C / 5°C . May: 18°C / 9°C . Jun: 22°C / 13°C . Jul: 23°C / 14°C . Aug: 23°C / 15°C . Sep: 20°C / 12°C . Oct: 16°C / 10°C . Nov: 11°C / 5°C . Dec: 8°C / 3°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 73 mm. Feb: 52 mm. Mar: 59 mm. Apr: 47 mm. May: 63 mm. Jun: 63 mm. Jul: 46 mm. Aug: 54 mm. Sep: 54 mm. Oct: 74 mm. Nov: 67 mm. Dec: 68 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 87%. Feb: 81%. Mar: 78%. Apr: 73%. May: 74%. Jun: 73%. Jul: 70%. Aug: 72%. Sep: 76%. Oct: 81%. Nov: 86%. Dec: 89%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 22 km/h . Feb: 23 km/h . Mar: 21 km/h . Apr: 19 km/h . May: 19 km/h . Jun: 18 km/h . Jul: 18 km/h . Aug: 18 km/h . Sep: 18 km/h . Oct: 21 km/h . Nov: 20 km/h . Dec: 22 km/h .
Sunshine
Sunshine
Sunshine: Jan: 4h. Feb: 5h. Mar: 7h. Apr: 10h. May: 11h. Jun: 12h. Jul: 12h. Aug: 11h. Sep: 9h. Oct: 6h. Nov: 4h. Dec: 3h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 1. Feb: UV 2. Mar: UV 4. Apr: UV 5. May: UV 6. Jun: UV 6. Jul: UV 6. Aug: UV 5. Sep: UV 4. Oct: UV 3. Nov: UV 1. 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: 2 days. Feb: 2 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: 1 days.
Climate Trends
Average highs have warmed by 1.1°C (2.0°F) across the available records. Average rainfall is trending drier by about 10 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Aug 2025 · 24°C | Aug · 23°C |
| Coldest month | Jan 2025 · 0°C | Jan · 2°C |
| Wettest month | Jan 2025 · 132 mm | Oct · 74 mm |
| Windiest month | Sep 2025 · 22 km/h | Feb · 23 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Poor April
Fair May
Good June best
Excellent July best
Excellent August best
Excellent September
Good October
Good November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 7°C / 2°C | 3°C / -3°C | 11days (73 mm) Wet | 3.7h Poor | 87% Very Muggy | 1.2 Low | Poor | View Details |
| February | 9°C / 3°C | 5°C / -1°C | 11days (52 mm) Wet | 5.2h Fair | 81% Humid | 1.7 Low | Poor | View Details |
| March | 11°C / 4°C | 8°C / 0°C | 12days (59 mm) Wet | 7.2h Good | 78% Humid | 3.5 Moderate | Poor | View Details |
| April | 15°C / 5°C | 12°C / 2°C | 10days (47 mm) Wet | 10.2h Excellent | 73% Muggy | 4.9 Moderate | Fair | View Details |
| May | 18°C / 9°C | 17°C / 7°C | 11days (63 mm) Wet | 11.2h Excellent | 74% Muggy | 5.7 High | Good | View Details |
| June best | 22°C / 13°C | 21°C / 11°C | 10days (63 mm) Wet | 11.5h Excellent | 73% Muggy | 6.3 High | Excellent | View Details |
| July best | 23°C / 14°C | 23°C / 13°C | 9days (46 mm) Wet | 11.7h Excellent | 70% Muggy | 5.8 High | Excellent | View Details |
| August best | 23°C / 15°C | 23°C / 14°C | 10days (54 mm) Wet | 10.7h Excellent | 72% Muggy | 5.4 High | Excellent | View Details |
| September | 20°C / 12°C | 19°C / 11°C | 10days (54 mm) Wet | 8.7h Good | 76% Humid | 4.2 Moderate | Good | View Details |
| October | 16°C / 10°C | 14°C / 7°C | 12days (74 mm) Wet | 6.2h Fair | 81% Humid | 2.5 Moderate | Good | View Details |
| November | 11°C / 5°C | 8°C / 2°C | 12days (67 mm) Wet | 4.3h Fair | 86% Very Muggy | 1.4 Low | Poor | View Details |
| December | 8°C / 3°C | 5°C / 0°C | 12days (68 mm) Wet | 3.2h Poor | 89% Very Muggy | 0.9 Low | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Grenay are June, July, August, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Grenay, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Grenay is August, with average daytime highs of 23°C (74°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Grenay is January, with average overnight lows of 2°C (35°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Grenay is October, averaging 74mm of precipitation across 12 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Grenay runs through March, October, November, December, with the heaviest rainfall in March. Based on 10-year averages for Grenay.
Grenay receives approximately 94 sunshine hours per year. The sunniest month is July with around 12 hours. Based on climate data for Grenay.
The least favorable months to visit Grenay are January, February, November, December, primarily due to very cold temperatures, frequent rain. For the best conditions, consider June, July, August instead.
The annual average UV index in Grenay is 4, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Grenay is 78%, classified as humid. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes, Grenay receives snow. Months with snowfall average 2 snow days and 2 cm (1 in) of accumulation, with about 6 frost days during winter.
Average wind speeds in Grenay are 20 km/h (12 mph). The windiest month is February with peak winds reaching 23 km/h (15 mph) (gusts up to 45 km/h / 28 mph).
Grenay averages 2 clear-sky days per month with overall cloud cover around 66%. The clearest skies occur in April.
The annual average dew point in Grenay is 8°C (46°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Grenay has a Oceanic climate, classified as Cfb 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 Grenay ranges from 5°C (41°F) to 13°C (55°F) on average. Wind chill makes winters feel noticeably colder than the actual temperature — layered clothing is recommended.
Yes, June is a great time to visit Grenay. It earns a climate score of 8.2/10 with Excellent.
For June in Grenay, pack Umbrella, Waterproof jacket, Sunscreen (SPF 30+), Sunglasses, Comfortable walking shoes. With average highs of 22°C (71°F) and 10 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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