Cornwall weather live forecast

Today's maximum temperature in Cornwall is expected to be 20°C. Select a day from the live weather forecast for Cornwall (Newquay), UK for more weather parameters.

Monday
17th Aug
20

17

4

5
Tuesday
18th Aug
20

18

2

6
Wednesday
19th Aug
19

16

5

5
Thursday
20th Aug
19

15

5

5
Friday
21st Aug
20

14

6

5

5-day weather forecast updated at 04:01 on Monday 17th August 2026 GMT

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Destination

The 5-day weather forecast for Cornwall (Newquay) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Top Cornwall destinations

Below are temperatures expected today at popular countries, regions and places in Cornwall. Select a destination to see the detailed weather forecast for today, tomorrow and the outlook for the next five days.

Cornwall weather forecast by day

Below are the detailed weather forecasts for Cornwall for the next 5 days. The forecasts shown are for Newquay and may not represent the whole of Cornwall. Browse more destinations in Cornwall to view more weather forecasts.

Cornwall weather for Monday 17th August 2026

Expect mostly cloudy with light rain in Cornwall with a maximum temperature of 20°C, maximum UV of 5 (Moderate) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 9% chance of some rain and a gentle breeze of 19 kph from the north-west.

20
°C maximum temperature
17
°C minimum temperature
mostly cloudy with light rain
4
hours of sunshine
5
UV index (Moderate)
9
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
19
kph wind from NW

Cornwall weather for Tuesday 18th August 2026

Expect mostly cloudy with light rain in Cornwall with a maximum temperature of 20°C, maximum UV of 6 (High) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 36% chance of some rain and a moderate breeze of 23 kph from the west.

20
°C maximum temperature
18
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
6
UV index (High)
36
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
23
kph wind from W

Cornwall weather for Wednesday 19th August 2026

Expect mostly cloudy with light rain in Cornwall with a maximum temperature of 19°C, maximum UV of 5 (Moderate) and 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 64% chance of some rain and a fresh breeze of 31 kph from the west.

19
°C maximum temperature
16
°C minimum temperature
mostly cloudy with light rain
5
hours of sunshine
5
UV index (Moderate)
64
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
31
kph wind from W

Cornwall weather for Thursday 20th August 2026

Expect mostly cloudy with light rain in Cornwall with a maximum temperature of 19°C, maximum UV of 5 (Moderate) and 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 79% chance of some rain and a moderate breeze of 24 kph from the west.

19
°C maximum temperature
15
°C minimum temperature
mostly cloudy with light rain
5
hours of sunshine
5
UV index (Moderate)
79
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
24
kph wind from W

Cornwall weather for Friday 21st August 2026

Expect sunshine and showers in Cornwall with a maximum temperature of 20°C, maximum UV of 5 (Moderate) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 58% chance of some rain and a moderate breeze of 23 kph from the north-west.