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:
16°C
60.8°F
°C °F

Condition: Clear Sky

Pressure: 1,021 hPa

Feel like: 16 °C

Temperature: 16°C

Cloud: 8%

Humidity: 78%

Wind: NNW - 7 km/h

Visibility: 22.46 km

Weather forecast

Sun
21 Jun
17°C / 26°C
Slight Thunderstorm
Mon
22 Jun
19°C / 25°C
Slight Thunderstorm
Tue
23 Jun
18°C / 31°C
Slight Thunderstorm
Wed
24 Jun
18°C / 24°C
Overcast
Thu
25 Jun
17°C / 22°C
Drizzle
Hourly forecast today:
20:00 PM
12° / 16°
12° / 16°
Clear Sky
78% 15 km/h
21:00 PM
12° / 15°
12° / 15°
Clear Sky
85% 14 km/h
22:00 PM
12° / 14°
12° / 14°
Clear Sky
88% 10 km/h
23:00 PM
12° / 14°
12° / 14°
Overcast
89% 10 km/h
00:00 AM
13° / 14°
13° / 14°
Mainly Clear
94% 7 km/h
01:00 AM
13° / 13°
13° / 13°
Partly Cloudy
96% 8 km/h
02:00 AM
12° / 13°
12° / 13°
Clear Sky
96% 8 km/h
03:00 AM
13° / 14°
13° / 14°
Overcast
93% 5 km/h
04:00 AM
12° / 14°
12° / 14°
Overcast
91% 5 km/h
05:00 AM
13° / 14°
13° / 14°
Overcast
92% 3 km/h
06:00 AM
13° / 15°
13° / 15°
Overcast
90% 2 km/h

30 Day Averages and Extremes

  • Average high 17.47°C
  • Average low 12.67°C
  • Hottest day 31°C (23 June 2026)
  • Coldest day 0°C (03 July 2026)
  • Average humidity 77.73%
  • Days with precipitation 22 days
  • Highest precipitation 71 mm (05 June 2026)

Yesterday's Data

  • Max: 19°C
  • Min: 14°C
  • Total Precipitation: 1 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:
- Comfortable sandals or sneakers
- Cotton or linen fabrics
- Sun hat or cap
- Sunscreen (if spending time outdoors)

Temperature

Early
15°C / 16°C
Morning
15°C / 17°C
Afternoon
14°C / 19°C
Evening
12°C / 15°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 440
  • CO 100
  • NH3 1
  • NO2 7
  • O3 40
  • PM10 6
  • PM25 4
  • SO2 0
  • CH4 1,364

Sunrise / Sunset

04:09
20:34