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Weather in Cornwall for March 2026

Your guide to Cornwall weather in March - trends and predictions

    Temperatures

  • Until now, March 2026 in Cornwall has been nearly identical to the historical average, with a temperature of 10.4 °C (showing only a slight deviation of 0.4 °C).

  • The forecast for the next days in Cornwall predicts temperatures to be around 11 °C, close to the historical average.

  • In general, the average temperature in Cornwall at the beginning of March is 9.6 °C. As the month progressed, temperatures tended to slightly increase, reaching an average of 10 °C by the end of March.

    • Rain 🌧️

  • Cornwall experiences heavy rainfall in March, with over 20 rainy days and an average total precipitation 81.4 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
8
Dry days
Average rainy days
23
Rainy days
Average snowy days
0
Snow days
Average temperatures
10°/6°
Temperatures
Average wind speed
31 km/h
Avg max wind
Average humidity
82 %
Avg humidity

Cornwall Weather March

Move between months or click on a day
February
April
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Patchy light rain with thunder
9°
2
Light rain shower
9°
3
Light rain shower
8°
4
Light rain shower
10°
5
Light rain shower
11°
6
Light rain shower
10°
7
Patchy rain possible
10°
8
Overcast
11°
9
Light rain shower
11°
10
Light rain shower
10°
11
Patchy rain possible
10°
12
Light drizzle
10°
13
Overcast
9°
14
Moderate or heavy rain with thunder
9°
15
Light rain
10°
16
Patchy rain possible
10°
17
Patchy rain possible
11°
18
Patchy rain possible
11°
19
Light drizzle
12°
20
Sunny
12°
21
Sunny
12°
22
Sunny
11°
23
Sunny
12°
24
Partly cloudy
12°
25
Patchy rain possible
9°
26
Partly cloudy
9°
27
Partly cloudy
10°
28
Patchy rain possible
11°
29
Sunny
10°
30
Partly cloudy
11°
31
Sunny
10°

Temperatures trend during March in Cornwall

See the weather trend as well as the moving average line

March weather in Cornwall day by day

Click on a date for more information
February April
Date Weather Temperatures Rain UV More
1 Mar. Patchy light rain with thunder
Patchy light rain with thunder
 9° /5° 7.7 mm 2
2 Mar. Light rain shower
Light rain shower
 9° /5° 3.2 mm 1
3 Mar. Light rain shower
Light rain shower
 8° /5° 0.9 mm 2
4 Mar. Light rain shower
Light rain shower
 10° /5° 4.1 mm 2
5 Mar. Light rain shower
Light rain shower
 11° /5° 0.7 mm 2
6 Mar. Light rain shower
Light rain shower
 10° /6° 1.2 mm 2
7 Mar. Patchy rain possible
Patchy rain possible
 10° /7° 2.3 mm 2
8 Mar. Overcast
Overcast
 11° /8° 1.6 mm 2
9 Mar. Light rain shower
Light rain shower
 11° /8° 3.3 mm 2
10 Mar. Light rain shower
Light rain shower
 10° /7° 3.5 mm 2
11 Mar. Patchy rain possible
Patchy rain possible
 10° /6° 1 mm 2
12 Mar. Light drizzle
Light drizzle
 10° /6° 5.1 mm 2
13 Mar. Overcast
Overcast
 9° /5° 2 mm 2
14 Mar. Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
 9° /6° 3 mm 2
15 Mar. Light rain
Light rain
 10° /5° 2.1 mm 2
16 Mar. Patchy rain possible
Patchy rain possible
 10° /4° 0.5 mm 2
17 Mar. Patchy rain possible
Patchy rain possible
 11° /6° 3.5 mm 2
18 Mar. Patchy rain possible
Patchy rain possible
 11° /7° 0.1 mm 3
19 Mar. Light drizzle
Light drizzle
 12° /8° 1 mm 3
20 Mar. Sunny
Sunny
 12° /8° 0 mm 0.6
21 Mar. Sunny
Sunny
 12° /7° 0 mm 0.7
22 Mar. Sunny
Sunny
 11° /7° 0 mm 0.7
23 Mar. Sunny
Sunny
 12° /7° 0 mm 0.6
24 Mar. Partly cloudy
Partly cloudy
 12° /7° 0 mm 0.8
25 Mar. Patchy rain possible
Patchy rain possible
 9° /8° 0.1 mm 2
26 Mar. Partly cloudy
Partly cloudy
 9° /7° 0 mm 3
27 Mar. Partly cloudy
Partly cloudy
 10° /8° 0 mm 3
28 Mar. Patchy rain possible
Patchy rain possible
 11° /8° 0 mm 2
29 Mar. Sunny
Sunny
 10° /7° 0 mm 3
30 Mar. Partly cloudy
Partly cloudy
 11° /8° 0 mm 3
31 Mar. Sunny
Sunny
 10° /8° 0.1 mm 3
Next
Important Notice
Our weather forecast for Cornwall in March is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Cornwall forecast closer to your planned date for the most up-to-date weather information.
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Cornwall in March - FAQ

What are the expected maximum and minimum temperatures in Cornwall during March?

During March, expect a variety of temperatures with highs around 10° and lows near 6°, suitable for diverse activities and preferences.

How much rainfall should be expected in Cornwall during March?

Moderate rainfall is anticipated in Cornwall during March, with a total of 81.4 mm spread over approximately 23 days. Considering plans for rainy days is advisable.

What are the typical wind conditions in Cornwall during March?

The average wind speed in Cornwall during March is 31 km/h, suggesting breezy to windy conditions, depending on your activities.

Cornwall water temperatures in March

The average water temperature of the Atlantic Ocean near Cornwall in March is 8.2 °C. At the beginning of March temperatures are around 8.3 °C; by the end of the month they stay fairly steady and reach 7.8 °C.

What is the water temperature in Cornwall in March?
The average water temperature in Cornwall in March is 8.2 °C.
Can you swim in Cornwall in March?
Dangerously cold water: hypothermia risk is high. Only experienced cold-water swimmers with proper gear should consider entering.

March rainfall patterns in Cornwall

Explore the daily rainfall trends and prepare for Cornwalls March weather 💧
Typically, Cornwall has 23 rainy days in March with a total of 81.4 mm of rainfall.
Top locations in Cornwall
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FalmouthLooeNewquayPenzancePerranporthSt AustellSt IvesTruro
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Location coordinates Where is Cornwall?

Get accurate weather forecasts for Cornwall, located at latitude 50.416 and longitude -5.073. Stay updated with localized weather information tailored for Cornwall.

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