Weather in Guernsey for August 2025
In general, the average temperature in Guernsey at the beginning of August is 17.7 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 17.6 °C by the end of August.
Expect significant rainfall in Guernsey during August, with an average of 17 rainy days.
Is August a good time to visit Guernsey? check out the best time to travel to Guernsey page.
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Guernsey in August average weather
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  18° | 2 18° | 3  18° | ||||
| 4 17° | 5 18° | 6 18° | 7  17° | 8 18° | 9  18° | 10  19° |
| 11 20° | 12 19° | 13 18° | 14 18° | 15 18° | 16 19° | 17 19° |
| 18 18° | 19 19° | 20 18° | 21 17° | 22 19° | 23 19° | 24 18° |
| 25  17° | 26 18° | 27 18° | 28 18° | 29 17° | 30 17° | 31 18° |
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Temperatures trend during August in Guernsey
August weather day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Aug. | Patchy rain possible | 18° /16° | 6.7 mm | 5 | |
| 2 Aug. | Patchy rain possible | 18° /16° | 6.4 mm | 5 | |
| 3 Aug. | Moderate rain at times | 18° /16° | 3.8 mm | 4 | |
| 4 Aug. | Patchy rain possible | 17° /15° | 0.1 mm | 5 | |
| 5 Aug. | Moderate rain at times | 18° /15° | 1.6 mm | 5 | |
| 6 Aug. | Patchy rain possible | 18° /16° | 0.4 mm | 4 | |
| 7 Aug. | Partly cloudy | 17° /15° | 0.3 mm | 5 | |
| 8 Aug. | Patchy rain possible | 18° /15° | 0.2 mm | 4 | |
| 9 Aug. | Overcast | 18° /16° | 0.3 mm | 4 | |
| 10 Aug. | Sunny | 19° /17° | 0 mm | 5 | |
| 11 Aug. | Moderate rain at times | 20° /17° | 1 mm | 5 | |
| 12 Aug. | Patchy rain possible | 19° /16° | 0.1 mm | 5 | |
| 13 Aug. | Patchy rain possible | 18° /16° | 0.6 mm | 5 | |
| 14 Aug. | Patchy rain possible | 18° /16° | 2 mm | 4 | |
| 15 Aug. | Partly cloudy | 18° /16° | 0.1 mm | 5 | |
| 16 Aug. | Overcast | 19° /16° | 0.2 mm | 4 | |
| 17 Aug. | Patchy rain possible | 19° /16° | 0.1 mm | 5 | |
| 18 Aug. | Patchy rain possible | 18° /16° | 0.4 mm | 4 | |
| 19 Aug. | Overcast | 19° /16° | 0.3 mm | 4 | |
| 20 Aug. | Partly cloudy | 18° /16° | 1.4 mm | 5 | |
| 21 Aug. | Sunny | 17° /16° | 0 mm | 5 | |
| 22 Aug. | Partly cloudy | 19° /16° | 0.3 mm | 5 | |
| 23 Aug. | Partly cloudy | 19° /16° | 0.6 mm | 5 | |
| 24 Aug. | Moderate or heavy rain shower | 18° /15° | 26 mm | 4 | |
| 25 Aug. | Cloudy | 17° /15° | 0.5 mm | 4 | |
| 26 Aug. | Light rain shower | 18° /15° | 3.4 mm | 4 | |
| 27 Aug. | Light rain shower | 18° /16° | 2.3 mm | 5 | |
| 28 Aug. | Light rain shower | 18° /16° | 1.2 mm | 5 | |
| 29 Aug. | Light rain shower | 17° /15° | 0.2 mm | 5 | |
| 30 Aug. | Patchy rain possible | 17° /15° | 0.6 mm | 5 | |
| 31 Aug. | Light rain shower | 18° /16° | 8.8 mm | 4 | |
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Guide for Guernsey in August
In Guernsey, August typically experiences mild and pleasant weather, making it an ideal time to visit this beautiful island. At the beginning of the month, the weather in Guernsey is generally warm and sunny, with average temperatures ranging from 17° to 20°.
The island enjoys long daylight hours, providing ample opportunity for outdoor activities and exploration of its stunning natural landscapes.
Towards the end of August, the weather in Guernsey remains delightful, with temperatures ranging from 18° to 21°. Visitors can expect mostly sunny days with occasional light showers, creating a refreshing atmosphere.
The sea temperature also remains inviting for swimming and water sports, making it a great time to enjoy the island's picturesque beaches and coastal areas.
Guernsey's August weather is characterized by comfortable conditions, making it an excellent month for outdoor adventures, sightseeing, and enjoying the island's charming atmosphere.
The pleasant weather also allows for leisurely walks along the coastline and visits to the island's historical sites and cultural attractions. Overall, August offers an ideal climate for a memorable and enjoyable visit to Guernsey.
Guernsey in August - FAQ
What to pack to Guernsey in August?
As you prepare for your trip to Guernsey in August, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Guernsey, during August, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Layered Clothing: Light sweaters, long-sleeve shirts, light jackets, and comfortable pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Umbrellas/Raincoats: For rainy days
August rainfall patterns in Guernsey
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