Cornwall, United Kingdom Weather

  1. Cornwall, United Kingdom Weather
  2. Current conditions
  3. Weather forecast
  4. Averages and extremes
  5. Yesterday's Data
  6. Temperature and possibility of rain in Cornwall over the next 12 hours
  7. Temperature and possibility of rain in Cornwall in the coming days
  8. Rainfall in Cornwall in the coming days
  9. Cornwall Weather Summary
  10. Weather averages by month
  11. Cornwall's weather
  12. Frequently asked questions
  13. Comments
Cornwall, Weather
(Photo by Viktor Forgacs on Unsplash)

Current conditions

Updated:
17°C
62.6°F
°C °F

Condition: Mainly Clear

Pressure: 1,016 hPa

Feel like: 18 °C

Temperature: 17°C

Cloud: 24%

Humidity: 85%

Wind: WNW - 10 km/h

Visibility: 38.72 km

Weather forecast

Mon
10 Aug
12°C / 25°C
Overcast
Tue
11 Aug
17°C / 29°C
Clear Sky
Wed
12 Aug
18°C / 26°C
Overcast
Thu
13 Aug
18°C / 25°C
Overcast
Fri
14 Aug
15°C / 22°C
Overcast
Hourly forecast today:
21:00 PM
15° / 17°
15° / 17°
Mainly Clear
85% 21 km/h
22:00 PM
15° / 17°
15° / 17°
Mainly Clear
86% 19 km/h
23:00 PM
15° / 17°
15° / 17°
Partly Cloudy
86% 18 km/h
00:00 AM
15° / 17°
15° / 17°
Partly Cloudy
84% 16 km/h
01:00 AM
14° / 17°
14° / 17°
Clear Sky
86% 19 km/h
02:00 AM
14° / 16°
14° / 16°
Clear Sky
86% 20 km/h
03:00 AM
14° / 16°
14° / 16°
Clear Sky
89% 18 km/h
04:00 AM
15° / 16°
15° / 16°
Partly Cloudy
93% 10 km/h
05:00 AM
16° / 16°
16° / 16°
Overcast
95% 9 km/h
06:00 AM
17° / 17°
17° / 17°
Partly Cloudy
95% 10 km/h
07:00 AM
16° / 19°
16° / 19°
Clear Sky
84% 21 km/h

30 Day Averages and Extremes

  • Average high 20.0°C
  • Average low 13.1°C
  • Hottest day 29°C (11 August 2026)
  • Coldest day 0°C (22 August 2026)
  • Average humidity 69.8%
  • Days with precipitation 17 days
  • Highest precipitation 42 mm (03 August 2026)

Yesterday's Data

  • Max: 23°C
  • Min: 13°C
  • Total Precipitation: 0 mm

Temperature and possibility of rain in Cornwall over the next 12 hours

Temperature and possibility of rain in Cornwall in the coming days

Rainfall in Cornwall in the coming days

Cornwall Climate Summary

Cornwall features a Marine west coast, warm summer (Köppen classification: Cfb), with an average annual temperature of 12.23ºC (54.01ºF), which is about 1.48% higher than the national average for United Kingdom. Annually, the city experiences approximately 60.54 millimeters (2.38 inches) of rainfall, spread across 139.26 rainy days, accounting for 38.15% of the year.

Longitude 50.2660471
Latitude -5.0527125
Yearly high temperature 13.12ºC (55.62ºF)
Yearly low temperature 10.44ºC (50.79ºF)
Hottest month July 17.81ºC (64.06ºF)
Coldest month December 8.21ºC (46.78ºF)
Yearly precip 60.54mm (2.38in)
Days with rainfall 139.26 days (38.15%)
Driest month May (83.2%)
Wettest month December (80.38%)

Weather averages by month

Month High / Low (°C) Rain
January 9.27° / 7.02° 14.73 days
February 8.94° / 6.63° 12.0 days
March 9.75° / 6.91° 11.27 days
April 11.39° / 8.25° 9.18 days
May 13.37° / 10.2° 7.0 days
June 15.82° / 12.67° 10.73 days
July 17.81° / 14.76° 8.27 days
August 17.78° / 15.09° 11.73 days
September 16.62° / 13.86° 9.45 days
October 14.46° / 12.04° 13.45 days
November 11.85° / 9.61° 15.09 days
December 10.38° / 8.21° 16.36 days

Cornwall's weather

Frequently asked questions

1. What is the hottest month in Cornwall?

July has the highest average monthly temperature (daily mean of 17.81ºC) and December are the coolest (daily mean of 8.21ºC).

2. What should I wear in Cornwall today?

For today's warm weather in Cornwall, with temperatures between 20ºC to 23ºC (68.0ºF to 73.4ºF), you might consider wearing:
- T-shirt or short-sleeve blouse
- Sun hat or cap
- Comfortable sandals or sneakers
- Cotton or linen fabrics

Temperature

Early
13°C / 14°C
Morning
15°C / 20°C
Afternoon
14°C / 23°C
Evening
15°C / 17°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 434
  • CO 113
  • NH3 0
  • NO2 1
  • O3 63
  • PM10 8
  • PM25 3
  • SO2 0
  • CH4 1,354

Sunrise / Sunset

05:02
19:49