Chester, Canada experiences average highs of 12°C (54°F) and lows of 6°C (43°F) throughout the year. Rainfall is moderate, averaging about 11 rainy days per month. Average highs have stayed broadly stable across the available records.
Chester, Canada Weather & Climate 2026
Monthly climate averages for Chester, Canada. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Feb–Oct 
Wetter season: Jan–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
4.4/10
Best: June, July, August, September
UV Index
4
Low
Temperature 12°C / 6°C
Feels Like 9°C / 2°C
Rainy Days 11
Rainfall 122 mm
Sunshine 7 h
Humidity 78%
Wind Speed 25 km/h
Dew Point 5°C
Snow Days 7 days
Frost Days 17 days
Hottest Month
23°C
August
Avg Low17°C
Rain10days
Coldest Month
-5°C
February
Avg High2°C
Rain11days
Driest Month
9days
September
Avg High20°C
Avg Low15°C
Windiest Month
30 km/h
December (Gusts 49)
Sea Temperature
1°C – 19°C
Warmest water: August (
18.5°C
)
Worst Time to Visit
Consider avoiding January, February, March, December due to very cold temperatures, frequent rain.
Sun Position
Sunrise 05:33
Daylight 15.5h
Sunset 21:05
Live conditions—
Chester on the map · live conditions
Chester, Canada
- Continent
- Americas
- Country
- Canada
- City
- Chester
- Population
- 2.3K
- Coordinates
- 44.54°, -64.24°
Seasonal Breakdown
Spring
Mar–May
Avg High 9°C
Avg Low 2°C
Rain 12 days/mo
Summer
Jun–Aug
Avg High 22°C
Avg Low 16°C
Rain 11 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 15°C
Avg Low 9°C
Rain 11 days/mo
1/3 best months
Winter
Dec–Feb
Avg High 2°C
Avg Low -4°C
Rain 12 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: 2°C / -4°C . Feb: 2°C / -5°C . Mar: 4°C / -2°C . Apr: 9°C / 2°C . May: 15°C / 7°C . Jun: 19°C / 12°C . Jul: 23°C / 17°C . Aug: 23°C / 17°C . Sep: 20°C / 15°C . Oct: 15°C / 10°C . Nov: 9°C / 3°C . Dec: 4°C / -2°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 140 mm. Feb: 138 mm. Mar: 132 mm. Apr: 135 mm. May: 98 mm. Jun: 113 mm. Jul: 93 mm. Aug: 96 mm. Sep: 102 mm. Oct: 129 mm. Nov: 140 mm. Dec: 147 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 79%. Feb: 77%. Mar: 75%. Apr: 74%. May: 75%. Jun: 79%. Jul: 81%. Aug: 80%. Sep: 79%. Oct: 78%. Nov: 77%. Dec: 78%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 29 km/h . Feb: 29 km/h . Mar: 28 km/h . Apr: 26 km/h . May: 23 km/h . Jun: 22 km/h . Jul: 20 km/h . Aug: 20 km/h . Sep: 22 km/h . Oct: 24 km/h . Nov: 29 km/h . Dec: 30 km/h .
Sunshine
Sunshine
Sunshine: Jan: 5h. Feb: 6h. Mar: 7h. Apr: 8h. May: 9h. Jun: 10h. Jul: 10h. Aug: 10h. Sep: 8h. Oct: 7h. Nov: 5h. Dec: 4h.
Sea Temperature
Sea Temperatureswim
Line chart showing monthly sea temperature. Jan: 3°C . Feb: 1°C . Mar: 2°C . Apr: 5°C . May: 9°C . Jun: 13°C . Jul: 17°C . Aug: 19°C . Sep: 18°C . Oct: 15°C . Nov: 10°C . Dec: 5°C .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 2. Feb: UV 3. Mar: UV 4. Apr: UV 5. May: UV 6. Jun: UV 6. Jul: UV 6. Aug: UV 6. Sep: UV 5. Oct: UV 4. Nov: UV 2. Dec: UV 2.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow DaysSnowfall
Snow Days: Jan: 12 days. Feb: 12 days. Mar: 11 days. Apr: 4 days. May: 1 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 0 days. Nov: 3 days. Dec: 8 days.
Climate Trends
Average highs have stayed broadly stable across the available records. Average rainfall is trending drier by about 18 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 23°C | Aug · 23°C |
| Coldest month | Feb 2025 · -7°C | Feb · -5°C |
| Wettest month | Apr 2025 · 178 mm | Dec · 147 mm |
| Windiest month | Dec 2025 · 34 km/h | Dec · 30 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Poor April
Poor May
Fair June best
Good July best
Excellent August best
Excellent September best
Excellent October
Fair November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 2°C / -4°C | -4°C / -10°C | 12days (140 mm) Wet | 4.8h Fair | 79% Humid | 1.9 Low | Poor | View Details |
| February | 2°C / -5°C | -3°C / -11°C | 11days (138 mm) Wet | 6.1h Fair | 77% Humid | 2.9 Moderate | Poor | View Details |
| March | 4°C / -2°C | -1°C / -8°C | 13days (132 mm) Wet | 7.3h Good | 75% Muggy | 3.7 Moderate | Poor | View Details |
| April | 9°C / 2°C | 5°C / -3°C | 13days (135 mm) Wet | 8.2h Good | 74% Muggy | 4.9 Moderate | Poor | View Details |
| May | 15°C / 7°C | 12°C / 3°C | 11days (98 mm) Wet | 9h Good | 75% Muggy | 5.6 High | Fair | View Details |
| June best | 19°C / 12°C | 19°C / 11°C | 12days (113 mm) Wet | 9.7h Good | 79% Humid | 5.8 High | Good | View Details |
| July best | 23°C / 17°C | 24°C / 17°C | 10days (93 mm) Wet | 9.9h Good | 81% Humid | 6.4 High | Excellent | View Details |
| August best | 23°C / 17°C | 24°C / 17°C | 10days (96 mm) Wet | 9.8h Good | 80% Humid | 5.9 High | Excellent | View Details |
| September best | 20°C / 15°C | 20°C / 13°C | 9days (102 mm) Wet | 8.2h Good | 79% Humid | 4.9 Moderate | Excellent | View Details |
| October | 15°C / 10°C | 13°C / 7°C | 11days (129 mm) Wet | 6.8h Fair | 78% Humid | 3.6 Moderate | Fair | View Details |
| November | 9°C / 3°C | 5°C / -2°C | 12days (140 mm) Wet | 5h Fair | 77% Humid | 1.9 Low | Poor | View Details |
| December | 4°C / -2°C | -1°C / -8°C | 13days (147 mm) Wet | 4.4h Fair | 78% Humid | 1.5 Low | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Chester are June, July, August, September, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Chester, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Chester 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 Chester is February, with average overnight lows of -5°C (23°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Chester is December, averaging 147mm of precipitation across 13 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Chester runs through March, April, December, January, with the heaviest rainfall in March. Based on 10-year averages for Chester.
Chester receives approximately 89 sunshine hours per year. The sunniest month is July with around 10 hours. Based on climate data for Chester.
The least favorable months to visit Chester are January, February, March, December, primarily due to very cold temperatures, frequent rain. For the best conditions, consider June, July, August, September instead.
The annual average UV index in Chester is 4, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Chester is 78%, classified as humid. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Sea temperatures in Summer average 10°C (50°F), which most swimmers will find too cold without a wetsuit.
Yes, Chester receives snow. Months with snowfall average 7 snow days and 18 cm (7 in) of accumulation, with about 17 frost days during winter.
Average wind speeds in Chester are 25 km/h (16 mph). The windiest month is December with peak winds reaching 30 km/h (18 mph) (gusts up to 49 km/h / 31 mph).
Chester averages 3 clear-sky days per month with overall cloud cover around 66%. The clearest skies occur in September.
The annual average dew point in Chester is 5°C (41°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Chester 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 Chester ranges from 2°C (36°F) to 9°C (48°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 Chester. It earns a climate score of 6.8/10 with Good.
For June in Chester, pack Umbrella, Waterproof jacket, Comfortable walking shoes. With average highs of 19°C (66°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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