Cornwall (St Ives)
August
Weather in Cornwall for August 2025
Your guide to Cornwall weather in August - trends and predictions
In general, the average temperature in Cornwall at the beginning of August is 18.1 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 17.4 °C by the end of August.
Cornwall in August brings notable rainfall, with an average of 18 rainy days and a total precipitation of 37.8 mm.
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Temperatures
Rain 🌧️
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13
Dry days
18
Rainy days
0
Snow days
18°/15°
Temperatures
29 km/h
Avg max wind
82 %
Avg humidity
Cornwall Weather August
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  18° | 2  19° | 3  17° | ||||
| 4 18° | 5 20° | 6 18° | 7 17° | 8 18° | 9 18° | 10 19° |
| 11 22° | 12 18° | 13 18° | 14 17° | 15  19° | 16  18° | 17 17° |
| 18 17° | 19 18° | 20 16° | 21 17° | 22 17° | 23 17° | 24 15° |
| 25 17° | 26 18° | 27 18° | 28 18° | 29 16° | 30 16° | 31 19° |
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Temperatures trend during August in Cornwall
See the weather trend as well as the moving average line
August weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Aug. | Partly cloudy | 18° /15° | 0 mm | 5 | |
| 2 Aug. | Patchy rain possible | 19° /15° | 0.5 mm | 4 | |
| 3 Aug. | Overcast | 17° /14° | 0.3 mm | 4 | |
| 4 Aug. | Patchy rain possible | 18° /14° | 0.1 mm | 4 | |
| 5 Aug. | Patchy rain possible | 20° /16° | 1.2 mm | 5 | |
| 6 Aug. | Patchy rain possible | 18° /15° | 1.5 mm | 4 | |
| 7 Aug. | Patchy rain possible | 17° /14° | 1.2 mm | 4 | |
| 8 Aug. | Light rain shower | 18° /15° | 1.6 mm | 4 | |
| 9 Aug. | Patchy rain possible | 18° /16° | 0.2 mm | 4 | |
| 10 Aug. | Patchy rain possible | 19° /15° | 0.2 mm | 4 | |
| 11 Aug. | Patchy rain possible | 22° /16° | 0 mm | 5 | |
| 12 Aug. | Patchy rain possible | 18° /14° | 0 mm | 4 | |
| 13 Aug. | Light rain shower | 18° /15° | 1.7 mm | 4 | |
| 14 Aug. | Patchy rain possible | 17° /15° | 0.3 mm | 4 | |
| 15 Aug. | Light drizzle | 19° /16° | 0.9 mm | 4 | |
| 16 Aug. | Sunny | 18° /14° | 0 mm | 5 | |
| 17 Aug. | Patchy rain possible | 17° /13° | 0.4 mm | 4 | |
| 18 Aug. | Patchy rain possible | 17° /15° | 0.1 mm | 4 | |
| 19 Aug. | Light rain shower | 18° /16° | 4 mm | 4 | |
| 20 Aug. | Patchy rain possible | 16° /15° | 1.1 mm | 4 | |
| 21 Aug. | Patchy rain possible | 17° /14° | 0.6 mm | 4 | |
| 22 Aug. | Light drizzle | 17° /16° | 1.8 mm | 4 | |
| 23 Aug. | Patchy rain possible | 17° /15° | 3.6 mm | 4 | |
| 24 Aug. | Light rain shower | 15° /14° | 13.8 mm | 4 | |
| 25 Aug. | Patchy rain possible | 17° /13° | 1.5 mm | 4 | |
| 26 Aug. | Patchy rain possible | 18° /15° | 0.2 mm | 4 | |
| 27 Aug. | Patchy light drizzle | 18° /16° | 0.9 mm | 4 | |
| 28 Aug. | Patchy rain possible | 18° /14° | 0.1 mm | 4 | |
| 29 Aug. | Patchy rain possible | 16° /13° | 0.1 mm | 4 | |
| 30 Aug. | Partly cloudy | 16° /13° | 0 mm | 5 | |
| 31 Aug. | Sunny | 19° /14° | 0 mm | 5 | |
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Important Notice
Our weather forecast for Cornwall in August 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.
Cornwall in August - FAQ
What are the expected maximum and minimum temperatures in Cornwall during August?
During August, expect a variety of temperatures with highs around 18° and lows near 15°, suitable for diverse activities and preferences.
How much rainfall should be expected in Cornwall during August?
In August, Cornwall can expect light to moderate rainfall, totaling 37.8 mm across approximately 18 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Cornwall during August?
The average wind speed in Cornwall during August is 29 km/h, suggesting breezy to windy conditions, depending on your activities.
August rainfall patterns in Cornwall
Explore the daily rainfall trends and prepare for Cornwalls August weather 💧
UV exposure in Cornwall during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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