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Weather in St. Helens for August 2025

Your guide to St. Helens weather in August - trends and predictions

    Temperatures

  • In general, the average temperature in St. Helens at the beginning of August is 19 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 18 °C by the end of August.

  • Rain 🌧️

  • St. Helens experiences heavy rainfall in August, with over 20 rainy days and an average total precipitation 85.9 mm.

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Average dry days
9
Dry days
Average rainy days
22
Rainy days
Average snowy days
0
Snow days
Average temperatures
19°/13°
Temperatures
Average wind speed
19 km/h
Avg max wind
Average humidity
73 %
Avg humidity

St. Helens in August average weather

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Temperatures trend during August in St. Helens

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. Patchy rain possible
Patchy rain possible
20° /13° 1 mm 5
2 Aug. Moderate or heavy rain shower
Moderate or heavy rain shower
20° /13° 8.8 mm 5
3 Aug. Patchy rain possible
Patchy rain possible
19° /12° 0.3 mm 4
4 Aug. Patchy rain possible
Patchy rain possible
19° /13° 0.4 mm 5
5 Aug. Moderate or heavy rain shower
Moderate or heavy rain shower
19° /11° 12.2 mm 4
6 Aug. Patchy rain possible
Patchy rain possible
18° /11° 2.8 mm 4
7 Aug. Patchy rain possible
Patchy rain possible
18° /12° 1.4 mm 4
8 Aug. Patchy rain possible
Patchy rain possible
18° /12° 1.3 mm 4
9 Aug. Overcast
Overcast
21° /12° 0.3 mm 5
10 Aug. Overcast
Overcast
24° /15° 0.1 mm 6
11 Aug. Overcast
Overcast
24° /14° 0.4 mm 6
12 Aug. Heavy rain at times
Heavy rain at times
21° /14° 4.6 mm 5
13 Aug. Patchy rain possible
Patchy rain possible
21° /13° 3.8 mm 5
14 Aug. Moderate or heavy rain shower
Moderate or heavy rain shower
19° /12° 7.7 mm 5
15 Aug. Patchy rain possible
Patchy rain possible
18° /12° 3 mm 4
16 Aug. Patchy rain possible
Patchy rain possible
20° /11° 0.3 mm 5
17 Aug. Patchy rain possible
Patchy rain possible
20° /13° 0.1 mm 5
18 Aug. Heavy rain at times
Heavy rain at times
18° /13° 2 mm 4
19 Aug. Patchy rain possible
Patchy rain possible
21° /13° 4.9 mm 5
20 Aug. Patchy rain possible
Patchy rain possible
20° /12° 3.2 mm 5
21 Aug. Patchy rain possible
Patchy rain possible
21° /12° 1 mm 5
22 Aug. Patchy rain possible
Patchy rain possible
19° /14° 2.1 mm 5
23 Aug. Patchy rain possible
Patchy rain possible
19° /13° 3.1 mm 5
24 Aug. Patchy rain possible
Patchy rain possible
17° /12° 0.9 mm 4
25 Aug. Light rain shower
Light rain shower
16° /10° 4 mm 4
26 Aug. Moderate or heavy rain shower
Moderate or heavy rain shower
18° /12° 6.5 mm 4
27 Aug. Light rain shower
Light rain shower
17° /12° 5.8 mm 4
28 Aug. Light rain shower
Light rain shower
20° /12° 1 mm 5
29 Aug. Light rain shower
Light rain shower
18° /11° 0.8 mm 4
30 Aug. Light rain shower
Light rain shower
18° /11° 0.9 mm 5
31 Aug. Light rain
Light rain
19° /11° 1.4 mm 5
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Important Notice
Our weather forecast for St. Helens 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 St. Helens forecast closer to your planned date for the most up-to-date weather information.

St. Helens in August - FAQ

What are the expected maximum and minimum temperatures in St. Helens during August?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in St. Helens during August?
Moderate rainfall is anticipated in St. Helens during August, with a total of 85.9 mm spread over approximately 22 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in St. Helens during August?
The average wind speed in St. Helens during August is 19 km/h, suggesting breezy to windy conditions, depending on your activities.

August rainfall patterns in St. Helens

Explore the daily rainfall trends and prepare for St. Helenss August weather 💧

UV exposure in St. Helens during August

Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️

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Location coordinates Where is St. Helens?

Get accurate weather forecasts for St. Helens, located at latitude 53.45 and longitude -2.733. Stay updated with localized weather information tailored for St. Helens.

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