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:
20°C
68.0°F
°C °F

Condition: Clear Sky

Pressure: 1,018 hPa

Feel like: 22 °C

Temperature: 20°C

Cloud: 0%

Humidity: 80%

Wind: SE - 6 km/h

Visibility: 28.64 km

Weather forecast

Wed
24 Jun
17°C / 23°C
Drizzle
Thu
25 Jun
16°C / 20°C
Overcast
Fri
26 Jun
14°C / 18°C
Drizzle
Sat
27 Jun
13°C / 18°C
Drizzle
Sun
28 Jun
13°C / 17°C
Overcast
Hourly forecast today:
00:00 AM
17° / 20°
17° / 20°
Clear Sky
80% 16 km/h
01:00 AM
17° / 21°
17° / 21°
Clear Sky
81% 19 km/h
02:00 AM
17° / 20°
17° / 20°
Clear Sky
83% 16 km/h
03:00 AM
17° / 19°
17° / 19°
Clear Sky
87% 11 km/h
04:00 AM
17° / 18°
17° / 18°
Clear Sky
92% 9 km/h
05:00 AM
17° / 19°
17° / 19°
Clear Sky
92% 8 km/h
06:00 AM
18° / 20°
18° / 20°
Clear Sky
88% 5 km/h
07:00 AM
18° / 22°
18° / 22°
Clear Sky
79% 13 km/h
08:00 AM
18° / 23°
18° / 23°
Clear Sky
74% 22 km/h
09:00 AM
18° / 24°
18° / 24°
Clear Sky
72% 26 km/h
10:00 AM
18° / 24°
18° / 24°
Clear Sky
72% 21 km/h

30 Day Averages and Extremes

  • Average high 17.63°C
  • Average low 12.5°C
  • Hottest day 29°C (23 June 2026)
  • Coldest day 0°C (05 July 2026)
  • Average humidity 75.03%
  • Days with precipitation 23 days
  • Highest precipitation 58 mm (07 June 2026)

Yesterday's Data

  • Max: 28°C
  • Min: 18°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 very hot weather in Cornwall, with the high temperatures above 29ºC (84.2ºF), consider wearing:
- Lightweight t-shirt or tank top
- UV-protective sunglasses
- Sunscreen for skin protection
- Thin, moisture-wicking socks

Temperature

Early
17°C / 19°C
Morning
18°C / 24°C
Afternoon
21°C / 28°C
Evening
17°C / 20°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 439
  • CO 144
  • NH3 1
  • NO2 5
  • O3 89
  • PM10 30
  • PM25 20
  • SO2 0
  • CH4 1,411

Sunrise / Sunset

04:10
20:34