Gloucester, United States experiences average highs of 13°C (55°F) and lows of 8°C (46°F) throughout the year. Rainfall is moderate, averaging about 10 rainy days per month. Average highs have cooled by 0.6°C (1.1°F) across the available records.
Gloucester, United States Weather & Climate 2026
Monthly climate averages for Gloucester, United States. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Feb–Nov 
Wetter season: Jan–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
4.8/10
Best: June, July, August, September, October
UV Index
5
Low
Temperature 13°C / 8°C
Feels Like 11°C / 4°C
Rainy Days 10
Rainfall 106 mm
Sunshine 8 h
Humidity 73%
Wind Speed 30 km/h
Dew Point 6°C
Snow Days 6 days
Frost Days 11 days
Hottest Month
24°C
July
Avg Low20°C
Rain9days
Coldest Month
-3°C
January
Avg High3°C
Rain11days
Driest Month
8days
August
Avg High24°C
Avg Low19°C
Windiest Month
35 km/h
January (Gusts 51)
Sea Temperature
4°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 05:06
Daylight 15.3h
Sunset 20:23
Live conditions—
Gloucester on the map · live conditions
Gloucester, United States
- Continent
- Americas
- Country
- United States
- City
- Gloucester
- Population
- 29.8K
- Elevation
- 16 m
- Coordinates
- 42.61°, -70.66°
Seasonal Breakdown
Spring
Mar–May
Avg High 11°C
Avg Low 5°C
Rain 12 days/mo
Summer
Jun–Aug
Avg High 23°C
Avg Low 18°C
Rain 9 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 16°C
Avg Low 11°C
Rain 10 days/mo
2/3 best months
Winter
Dec–Feb
Avg High 4°C
Avg Low -2°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: 3°C / -3°C . Feb: 4°C / -2°C . Mar: 7°C / 1°C . Apr: 11°C / 5°C . May: 16°C / 10°C . Jun: 21°C / 16°C . Jul: 24°C / 20°C . Aug: 24°C / 19°C . Sep: 21°C / 16°C . Oct: 16°C / 11°C . Nov: 10°C / 5°C . Dec: 5°C / 0°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 118 mm. Feb: 107 mm. Mar: 124 mm. Apr: 134 mm. May: 95 mm. Jun: 74 mm. Jul: 84 mm. Aug: 65 mm. Sep: 89 mm. Oct: 140 mm. Nov: 94 mm. Dec: 144 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 68%. Feb: 70%. Mar: 68%. Apr: 72%. May: 76%. Jun: 78%. Jul: 79%. Aug: 78%. Sep: 78%. Oct: 75%. Nov: 69%. Dec: 70%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 35 km/h . Feb: 34 km/h . Mar: 34 km/h . Apr: 31 km/h . May: 27 km/h . Jun: 25 km/h . Jul: 24 km/h . Aug: 24 km/h . Sep: 26 km/h . Oct: 29 km/h . Nov: 33 km/h . Dec: 34 km/h .
Sunshine
Sunshine
Sunshine: Jan: 6h. Feb: 7h. Mar: 8h. Apr: 9h. May: 10h. Jun: 11h. Jul: 11h. Aug: 11h. Sep: 9h. Oct: 7h. Nov: 7h. Dec: 6h.
Sea Temperature
Sea Temperatureswim
Line chart showing monthly sea temperature. Jan: 6°C . Feb: 4°C . Mar: 5°C . Apr: 7°C . May: 11°C . Jun: 16°C . Jul: 18°C . Aug: 19°C . Sep: 18°C . Oct: 15°C . Nov: 11°C . Dec: 8°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 7. Jul: UV 7. Aug: UV 7. Sep: UV 5. Oct: UV 4. Nov: UV 3. 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: 8 days. Feb: 8 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: 0 days. Dec: 5 days.
Climate Trends
Average highs have cooled by 0.6°C (1.1°F) across the available records. Average rainfall is trending wetter by about 14 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 25°C | Jul · 24°C |
| Coldest month | Feb 2025 · -5°C | Jan · -3°C |
| Wettest month | May 2025 · 154 mm | Dec · 144 mm |
| Windiest month | Dec 2025 · 39 km/h | Jan · 35 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Poor April
Poor May
Good 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 | 3°C / -3°C | -3°C / -10°C | 11days (118 mm) Wet | 5.9h Fair | 68% Muggy | 2.2 Moderate | Poor | View Details |
| February | 4°C / -2°C | -1°C / -9°C | 10days (107 mm) Wet | 6.7h Fair | 70% Muggy | 3.1 Moderate | Poor | View Details |
| March | 7°C / 1°C | 2°C / -6°C | 13days (124 mm) Wet | 7.9h Good | 68% Muggy | 4.1 Moderate | Poor | View Details |
| April | 11°C / 5°C | 7°C / 0°C | 12days (134 mm) Wet | 8.6h Good | 72% Muggy | 5.2 High | Poor | View Details |
| May | 16°C / 10°C | 14°C / 7°C | 11days (95 mm) Wet | 10h Excellent | 76% Humid | 6.2 High | Good | View Details |
| June best | 21°C / 16°C | 21°C / 14°C | 9days (74 mm) Wet | 11.2h Excellent | 78% Humid | 6.7 High | Excellent | View Details |
| July best | 24°C / 20°C | 26°C / 20°C | 9days (84 mm) Wet | 11.3h Excellent | 79% Humid | 7.1 Very High | Excellent | View Details |
| August best | 24°C / 19°C | 26°C / 20°C | 8days (65 mm) Wet | 11h Excellent | 78% Humid | 6.6 High | Excellent | View Details |
| September best | 21°C / 16°C | 21°C / 15°C | 10days (89 mm) Wet | 8.8h Good | 78% Humid | 5.2 High | Excellent | View Details |
| October best | 16°C / 11°C | 14°C / 8°C | 10days (140 mm) Wet | 7.2h Good | 75% Muggy | 3.8 Moderate | Good | View Details |
| November | 10°C / 5°C | 6°C / -1°C | 9days (94 mm) Wet | 6.5h Fair | 69% Muggy | 2.6 Moderate | Poor | View Details |
| December | 5°C / 0°C | 0°C / -7°C | 11days (144 mm) Wet | 5.5h Fair | 70% Muggy | 1.9 Low | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Gloucester 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 Gloucester, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Gloucester is July, with average daytime highs of 24°C (76°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Gloucester is January, with average overnight lows of -3°C (27°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Gloucester is December, averaging 144mm of precipitation across 11 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Gloucester runs through March, April, January, May, with the heaviest rainfall in March. Based on 10-year averages for Gloucester.
Gloucester receives approximately 101 sunshine hours per year. The sunniest month is July with around 11 hours. Based on climate data for Gloucester.
The least favorable months to visit Gloucester are January, February, March, December, primarily due to very cold temperatures, frequent rain. For the best conditions, consider June, July, August, September, October instead.
The annual average UV index in Gloucester is 5, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Gloucester is 73%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Sea temperatures in Summer average 11°C (52°F), which most swimmers will find too cold without a wetsuit.
Yes, Gloucester receives snow. Months with snowfall average 6 snow days and 15 cm (6 in) of accumulation, with about 11 frost days during winter.
Average wind speeds in Gloucester are 30 km/h (19 mph). The windiest month is January with peak winds reaching 35 km/h (22 mph) (gusts up to 51 km/h / 32 mph).
Gloucester averages 5 clear-sky days per month with overall cloud cover around 57%. The clearest skies occur in November.
The annual average dew point in Gloucester is 6°C (43°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Gloucester 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 Gloucester ranges from 4°C (39°F) to 11°C (52°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 Gloucester. It earns a climate score of 8.2/10 with Excellent.
For June in Gloucester, pack Umbrella, Windbreaker, Sunscreen (SPF 30+), Sunglasses, Comfortable walking shoes. With average highs of 21°C (69°F) and 9 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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