Gloucester climate
Gloucester (England, United Kingdom) has a temperate oceanic climate (Köppen Cfb). The average temperature over the year is 10 °C51 °F, and about 772 mm30 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Gloucester climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 745 | 235 | 440 | 672.6 | 11 |
| Feb | 846 | 134 | 540 | 542.1 | 11 |
| Mar | 1050 | 236 | 643 | 562.2 | 8 |
| Apr | 1457 | 440 | 948 | 491.9 | 2 |
| May | 1763 | 745 | 1254 | 612.4 | 0 |
| Jun | 2068 | 1151 | 1560 | 632.5 | 0 |
| Jul | 2271 | 1254 | 1763 | 672.6 | 0 |
| Aug | 2170 | 1253 | 1762 | 702.8 | 0 |
| Sep | 1966 | 1049 | 1458 | 491.9 | 0 |
| Oct | 1559 | 745 | 1152 | 803.1 | 0 |
| Nov | 1050 | 440 | 745 | 793.1 | 4 |
| Dec | 846 | 337 | 541 | 763.0 | 9 |
| Year | 2271 | 134 | 1051 | 77230 | 46 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 94% | 80% | 0.8 | 8:16 |
| Feb | 91% | 79% | 1.5 | 9:52 |
| Mar | 87% | 75% | 2.7 | 11:42 |
| Apr | 83% | 69% | 4.1 | 13:49 |
| May | 81% | 70% | 5.0 | 15:38 |
| Jun | 80% | 71% | 5.3 | 16:40 |
| Jul | 79% | 70% | 5.0 | 16:15 |
| Aug | 81% | 73% | 4.2 | 14:37 |
| Sep | 83% | 70% | 3.2 | 12:33 |
| Oct | 89% | 76% | 1.8 | 10:32 |
| Nov | 93% | 81% | 1.0 | 8:43 |
| Dec | 95% | 82% | 0.6 | 7:47 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Gloucester is like
The warmest month is July, with an average high of 22 °C71 °F and a low of 12 °C54 °F. The coldest is January, when highs average 7 °C45 °F and lows 2 °C35 °F. There is a clear seasonal cycle, with 12.7 °C22.8 °F between the average temperature of the warmest and the coolest month.
Annual precipitation is moderate at about 772 mm30 in. Rain is spread fairly evenly through the year. The wettest month is October (80 mm3.1 in), the driest is April (49 mm1.9 in).
Relative humidity ranges from 79% in July to 95% in December. The clearest skies (lowest average cloud amount, 69%) are typical of April. Average wind speed near the ground ranges from 10 km/h (6 mph) in June to 13 km/h (8 mph) in January. Daylight lasts from about 7.8 hours in December to 16.7 hours in June.
Best time to visit Gloucester
Based on these averages, the most comfortable months for sightseeing and outdoor activities are June–September: average highs of 19 °C66 °F to 22 °C71 °F with 49 mm1.9 in to 70 mm2.8 in of precipitation per month.
The most challenging month is January, which is cold, with average highs of 7 °C45 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Gloucester
- Winter (December–February) — highs 745 to 8 °C46 °F, lows 134 to 3 °C37 °F, about 66 mm2.6 in of precipitation a month. Pack a warm coat, layers and closed shoes.
- Spring (March–May) — highs 1050 to 17 °C63 °F, lows 236 to 7 °C45 °F, about 55 mm2.2 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket.
- Summer (June–August) — highs 2068 to 22 °C71 °F, lows 1151 to 12 °C54 °F, about 67 mm2.6 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket.
- Autumn (September–November) — highs 1050 to 19 °C66 °F, lows 440 to 10 °C49 °F, about 69 mm2.7 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket.
How Gloucester compares
Compared with Swindon, about 47 km to the southeast, Gloucester has practically the same average temperature and receives a similar amount of precipitation.
Of the 66 places in the United Kingdom covered by World Climates, Gloucester is the 27th warmest by annual mean temperature and the 39th wettest by annual precipitation. See all of them on the United Kingdom climate page.
Places in other countries with the most similar temperature and rainfall pattern: Brugge (Belgium, Cfb), Amsterdam (The Netherlands, Cfb) and Amiens (France, Cfb).
Nearby places
- Cheltenham 12 km · 10 °C50 °F · 791 mm31 in
- Worcester 36 km · 10 °C50 °F · 772 mm30 in
- Swindon 47 km · 10 °C50 °F · 806 mm32 in
- Bristol 52 km · 11 °C51 °F · 811 mm32 in
- Newport 61 km · 11 °C52 °F · 967 mm38 in
- Oxford 69 km · 10 °C50 °F · 734 mm29 in
- Birmingham 72 km · 9 °C49 °F · 764 mm30 in
- Cardiff 78 km · 11 °C52 °F · 967 mm38 in
Frequently asked questions
What is the warmest month in Gloucester?
July is the warmest month in Gloucester, with an average high of 22 °C (71 °F) and an average low of 12 °C (54 °F).
What is the coldest month in Gloucester?
January is the coldest month, with an average high of 7 °C (45 °F) and an average low of 2 °C (35 °F).
When does it rain the most in Gloucester?
October is the wettest month with about 80 mm (3.1 in) of precipitation; April is the driest with about 49 mm (1.9 in).
What is the best time to visit Gloucester?
Judging by long-term averages, the most comfortable months are June–September.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 93 m, while Gloucester lies at about 24 m. Temperatures on this page were therefore adjusted by +0.4 °C0.8 °F using the standard lapse rate of 6.5 °C per 1,000 m.