Average weather, temperature, rainfall, sunshine hours
The climate of Scilly is
oceanic, with quite mild, rainy winters and mild, relatively rainy summers.
The islands are located south-west of the south-western tip of Great Britain, and have a particularly mild winter, and a climate that is not too rainy.
The
average temperature of the coldest month (February) is of 7.9 °C (46 °F), that of the warmest month (August) is of 16.9 °C (62 °F). The lowest record is -7.2 °C (19.0 °F), the highest is 27.8 °C (82 °F). Here are the average temperatures.
Scilly - Average temperatures| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|
| Min (°C) | 6 | 6 | 7 | 7 | 9 | 12 | 14 | 14 | 13 | 11 | 8 | 7 |
|---|
| Max (°C) | 10 | 10 | 11 | 12 | 14 | 17 | 19 | 20 | 18 | 15 | 12 | 10 |
|---|
| Min (°F) | 43 | 43 | 45 | 45 | 48 | 54 | 57 | 57 | 55 | 52 | 46 | 45 |
|---|
| Max (°F) | 50 | 50 | 52 | 54 | 57 | 63 | 66 | 68 | 64 | 59 | 54 | 50 |
|---|
amounts to 865 millimeters (34.1 inches) per year: so, it is at an intermediate level. It ranges from 50 mm (2 in) in the driest months (May, June) to 100 mm (3.9 in) in the wettest (December). Here is the average precipitation.
Scilly - Average precipitation| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
|---|
| Prec.(mm) | 95 | 70 | 60 | 55 | 50 | 50 | 65 | 65 | 65 | 95 | 95 | 100 | 865 |
|---|
| Prec.(in) | 3.7 | 2.8 | 2.4 | 2.2 | 2 | 2 | 2.6 | 2.6 | 2.6 | 3.7 | 3.7 | 3.9 | 34.1 |
|---|
| Days | 14 | 13 | 12 | 10 | 8 | 7 | 9 | 10 | 10 | 14 | 15 | 15 | 138 |
|---|
On average, there are around 1,690
sunshine hours per year. Here are the average sunshine hours per day.
Scilly - Sunshine| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|
| Hours | 2 | 3 | 4 | 6 | 7 | 7 | 7 | 7 | 5 | 4 | 2 | 2 |
|---|
The
sea temperature ranges between 10 °C (50 °F) and 17 °C (63 °F). So, it never becomes warm for swimming. Here are the average sea temperatures.
Scilly - Sea temperature| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|
| Temp (°C) | 11 | 10 | 10 | 11 | 12 | 14 | 16 | 17 | 17 | 15 | 13 | 12 |
|---|
| Temp (°F) | 52 | 50 | 50 | 52 | 54 | 57 | 61 | 63 | 63 | 59 | 55 | 54 |
|---|
Best Time
The best time to visit Scilly is the summer, or more generally
from mid-May to mid-September: temperatures are generally good for outdoors activities, although it's better to bring an umbrella, and a sweatshirt or sweater for the evening or for cool days.