Isles of Scilly (Hugh Town) climate
Isles of Scilly (Hugh Town) (England, United Kingdom) has a temperate oceanic climate (Köppen Cfb). The average temperature over the year is 12 °C54 °F, and about 1,003 mm40 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Isles of Scilly (Hugh Town) climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 1051 | 948 | 1049 | 1074.2 |
| Feb | 1049 | 847 | 948 | 873.4 |
| Mar | 1050 | 847 | 948 | 813.2 |
| Apr | 1151 | 1049 | 1050 | 642.5 |
| May | 1254 | 1153 | 1253 | 632.5 |
| Jun | 1559 | 1457 | 1458 | 632.5 |
| Jul | 1762 | 1661 | 1661 | 773.0 |
| Aug | 1763 | 1661 | 1762 | 702.8 |
| Sep | 1661 | 1560 | 1660 | 642.5 |
| Oct | 1558 | 1356 | 1457 | 1054.1 |
| Nov | 1355 | 1152 | 1253 | 1124.4 |
| Dec | 1152 | 1050 | 1051 | 1134.4 |
| Year | 1763 | 847 | 1254 | 1,00340 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 82% | 87% | 0.9 | 8:32 |
| Feb | 82% | 86% | 1.7 | 10:01 |
| Mar | 84% | 82% | 2.8 | 11:44 |
| Apr | 85% | 73% | 4.6 | 13:42 |
| May | 86% | 73% | 5.6 | 15:23 |
| Jun | 87% | 71% | 6.0 | 16:20 |
| Jul | 87% | 74% | 5.5 | 15:56 |
| Aug | 85% | 76% | 4.7 | 14:27 |
| Sep | 85% | 74% | 3.5 | 12:31 |
| Oct | 84% | 80% | 2.1 | 10:38 |
| Nov | 82% | 85% | 1.1 | 8:57 |
| Dec | 82% | 87% | 0.7 | 8:06 |
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 Isles of Scilly (Hugh Town) is like
The warmest month is August, with an average high of 17 °C63 °F and a low of 16 °C61 °F. The coldest is February, when highs average 10 °C49 °F and lows 8 °C47 °F. Seasonal differences are small — just 7.8 °C14 °F between the warmest and the coolest month.
It is wet, with about 1,003 mm40 in of precipitation per year. Rain is spread fairly evenly through the year. The wettest month is December (113 mm4.4 in), the driest is June (63 mm2.5 in).
Relative humidity ranges from 82% in December to 87% in June. The clearest skies (lowest average cloud amount, 71%) are typical of June. Average wind speed near the ground ranges from 19 km/h (12 mph) in June to 29 km/h (18 mph) in January. Daylight lasts from about 8.1 hours in December to 16.3 hours in June.
Best time to visit Isles of Scilly (Hugh Town)
Based on these averages, the most comfortable months for sightseeing and outdoor activities are June–September: average highs of 15 °C59 °F to 17 °C63 °F with 63 mm2.5 in to 77 mm3.0 in of precipitation per month.
The most challenging month is January, which is cold, with average highs of 10 °C51 °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 Isles of Scilly (Hugh Town)
- Winter (December–February) — highs 1049 to 11 °C52 °F, lows 847 to 10 °C50 °F, about 102 mm4.0 in of precipitation a month. Pack a warm coat, layers and closed shoes and an umbrella or light rain jacket.
- Spring (March–May) — highs 1050 to 12 °C54 °F, lows 847 to 11 °C53 °F, about 69 mm2.7 in of precipitation a month. Pack a warm coat, layers and closed shoes.
- Summer (June–August) — highs 1559 to 17 °C63 °F, lows 1457 to 16 °C61 °F, about 70 mm2.8 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket.
- Autumn (September–November) — highs 1355 to 16 °C61 °F, lows 1152 to 15 °C60 °F, about 93 mm3.7 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket and an umbrella or light rain jacket.
How Isles of Scilly (Hugh Town) compares
Compared with Plymouth, about 163 km to the east, Isles of Scilly (Hugh Town) is on average 1 °C1.8 °F warmer and receives 14% less precipitation (1,003 mm40 in vs 1,164 mm46 in). The difference is largest in December (2.4 °C4.4 °F warmer).
Of the 66 places in the United Kingdom covered by World Climates, Isles of Scilly (Hugh Town) is the warmest by annual mean temperature and the 12th 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 (seasons shifted for the other hemisphere where needed): Brest (France, Cfb), Wellington (New Zealand, Cfb) and Lower Hutt (New Zealand, Cfb).
Nearby places
- Plymouth 163 km · 11 °C53 °F · 1,164 mm46 in
- Brest 215 km · 12 °C54 °F · 897 mm35 in
- Exeter 217 km · 11 °C52 °F · 1,087 mm43 in
- Swansea 252 km · 11 °C52 °F · 1,105 mm43 in
- Cork 267 km · 11 °C51 °F · 1,198 mm47 in
- Guernsey (St Peter Port) 276 km · 12 °C54 °F · 847 mm33 in
- Cardiff 281 km · 11 °C52 °F · 967 mm38 in
- Newport 298 km · 11 °C52 °F · 967 mm38 in
Frequently asked questions
What is the warmest month in Isles of Scilly (Hugh Town)?
August is the warmest month in Isles of Scilly (Hugh Town), with an average high of 17 °C (63 °F) and an average low of 16 °C (61 °F).
What is the coldest month in Isles of Scilly (Hugh Town)?
February is the coldest month, with an average high of 10 °C (49 °F) and an average low of 8 °C (47 °F).
When does it rain the most in Isles of Scilly (Hugh Town)?
December is the wettest month with about 113 mm (4.4 in) of precipitation; June is the driest with about 63 mm (2.5 in).
What is the best time to visit Isles of Scilly (Hugh Town)?
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.