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:
19°C
66.2°F
°C °F

Condition: Clear Sky

Pressure: 1,020 hPa

Feel like: 19 °C

Temperature: 19°C

Cloud: 2%

Humidity: 76%

Wind: SSE - 13 km/h

Visibility: 32.76 km

Weather forecast

Fri
25 Sep
10°C / 18°C
Overcast
Sat
26 Sep
13°C / 18°C
Slight Rain
Sun
27 Sep
7°C / 17°C
Slight Rain
Mon
28 Sep
17°C / 19°C
Slight Rain
Tue
29 Sep
15°C / 18°C
Slight Rain
Hourly forecast today:
14:00 PM
15° / 19°
15° / 19°
Clear Sky
76% 27 km/h
15:00 PM
15° / 19°
15° / 19°
Clear Sky
78% 25 km/h
16:00 PM
15° / 19°
15° / 19°
Clear Sky
81% 23 km/h
17:00 PM
15° / 18°
15° / 18°
Clear Sky
84% 19 km/h
18:00 PM
15° / 17°
15° / 17°
Partly Cloudy
91% 16 km/h
19:00 PM
15° / 16°
15° / 16°
Clear Sky
97% 12 km/h
20:00 PM
15° / 15°
15° / 15°
Partly Cloudy
98% 11 km/h
21:00 PM
15° / 15°
15° / 15°
Mainly Clear
99% 13 km/h
22:00 PM
15° / 15°
15° / 15°
Overcast
98% 9 km/h
23:00 PM
13° / 14°
13° / 14°
Clear Sky
97% 7 km/h
00:00 AM
14° / 15°
14° / 15°
Mainly Clear
93% 9 km/h

30 Day Averages and Extremes

  • Average high 16.8°C
  • Average low 12.2°C
  • Hottest day 21°C (12 September 2026)
  • Coldest day 0°C (07 October 2026)
  • Average humidity 79.07%
  • Days with precipitation 23 days
  • Highest precipitation 52 mm (29 September 2026)

Yesterday's Data

  • Max: 19°C
  • Min: 10°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 mild weather in Cornwall, with temperatures between 15ºC to 18ºC (59.0ºF to 64.4ºF), consider wearing:
- Scarf (optional)
- Long-sleeve shirt or blouse
- Cotton socks
- Casual sneakers or loafers

Temperature

Early
10°C / 11°C
Morning
14°C / 17°C
Afternoon
15°C / 19°C
Evening
15°C / 15°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 430
  • CO 139
  • NH3 0
  • NO2 2
  • O3 71
  • PM10 7
  • PM25 4
  • SO2 0
  • CH4 1,379

Sunrise / Sunset

06:10
18:11