Cornwall weather live forecast

Today's maximum temperature in Cornwall is expected to be 17°C. Select a day from the live weather forecast for Cornwall (Newquay), UK for more weather parameters.

Friday
18th Sep
17

14

1

2
Saturday
19th Sep
18

16

3

2
Sunday
20th Sep
18

14

5

3
Monday
21st Sep
20

14

3

3
Tuesday
22nd Sep
21

13

5

4

5-day weather forecast updated at 04:00 on Friday 18th September 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 Friday 18th September 2026

Expect broken clouds in Cornwall with a maximum temperature of 17°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 29 kph from the south-west.

17
°C maximum temperature
14
°C minimum temperature
broken clouds
1
hour of sunshine
2
UV index (Low)
0
mm of rainfall expected
0
no heat & humidity
29
kph wind from SW

Cornwall weather for Saturday 19th September 2026

Expect mostly cloudy with light rain in Cornwall with a maximum temperature of 18°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 51% chance of some rain and a fresh breeze of 29 kph from the south-west.

18
°C maximum temperature
16
°C minimum temperature
mostly cloudy with light rain
3
hours of sunshine
2
UV index (Low)
51
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
29
kph wind from SW

Cornwall weather for Sunday 20th September 2026

Expect mostly cloudy with light rain in Cornwall with a maximum temperature of 18°C, maximum UV of 3 (Moderate) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 9% chance of some rain and a gentle breeze of 16 kph from the north-west.

18
°C maximum temperature
14
°C minimum temperature
mostly cloudy with light rain
5
hours of sunshine
3
UV index (Moderate)
9
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
16
kph wind from NW

Cornwall weather for Monday 21st September 2026

Expect fog in low lying areas in Cornwall with a maximum temperature of 20°C, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the south-east.

20
°C maximum temperature
14
°C minimum temperature
fog in low lying areas
3
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
11
kph wind from SE

Cornwall weather for Tuesday 22nd September 2026

Expect fog in low lying areas in Cornwall with a maximum temperature of 21°C, maximum UV of 4 (Moderate) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the south-east.