Which is the hottest month in Scilly Isles?

The hottest time of year in Scilly Isles is normally July. Expect maximum daytime temperatures to reach 19°C.

Which month has the most rain in Scilly Isles?

In terms of rainfall, December is usually the wettest month in Scilly Isles with 142mm on average. There are normally 20 days in December with some rain.

When is it sunniest in Scilly Isles?

The sunniest time of year in Scilly Isles is normally May with bright sunshine on average for 45% of daylight hours; that's 7 hours of sunshine per day.

When is the sea warmest in Scilly Isles?

The sea is usually at its warmest in Scilly Isles in August when the water temperature reaches 17°C.

Best time to visit Scilly Isles

Q: When is the best time to visit Scilly Isles?

The best time to visit Scilly Isles is May, June and July based on the following average weather conditions. Daily hours of sunshine = 10 hours or more.

Find the best time to visit Scilly Isles and plan your perfect trip in 2025/2026. Get holiday inspiration, weather guides, travel advice and find great deals.

Scilly Isles by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for England

Newmarket Holidays: Top offers on European holidays

Sale

Save on holidays to destinations across Europe in 2025/2026
Destinations include to France, Spain, Norway, Russia & Cyprus
Enjoy an escorted tour, city break, river cruise & more

Go to Newmarket Holidays deal >>

View all Newmarket Holidays offers

When is the best time to visit Scilly Isles?

The best time to visit Scilly Isles is May, June and July based on the following average weather conditions.

Daily hours of sunshine = 10 hours or more [remove]

Change the criteria to reflect your weather preferences.

0
Jan
0
Feb
0.5
Mar
2.5
Apr
3
May
3
Jun
3
Jul
2.5
Aug
1.5
Sep
0
Oct
0
Nov
0
Dec

Change criteria

Hours of Sunshine (daily)

2
Jan
3
Feb
4
Mar
6
Apr
7
May
7
Jun
7
Jul
6
Aug
5
Sep
3
Oct
2
Nov
2
Dec

Best time to visit

Destination

Daytime temperature

Sunshine hours

Sea temperature

Monthly rainfall

Days with some rain

Heat & humidity

The weather guide for England (Scilly Isles) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.

Metric (°C / mm) | Imperial (°F / inches)