Normal weather for Guernsey in September
It's pleasantly warm in September in Guernsey with an average temperature of 19°C. Temperatures this month range from a low of 17°C to a high of 22°C. At night, you can expect temperatures between 13°C and 16°C.
In September, there is an average of 46 mm of precipitation, spread over 8 days. The wind speed is around 4 Bft, mostly coming from the South.
The UV index is a maximum of 5 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Guernsey in September |
New York | ||
|---|---|---|---|
 Average Temperature |
19°C | 27°C | |
 High Temp |
22°C | 31°C | |
| Low Temp |
17°C | 21°C | |
 Total Precipitation |
46 mm | 57 mm | |
| Rainy Days |
8 days | 9 days | |
Start of September
The month of September starts in Guernsey with mild temps, averaging around 21°C during the day and nights around 16°C. There’s little chance of precipitation. The weather’s mostly sunny and dry.
Mid September
By mid-September, daytime temps drop to around 20°C, with nights around 15°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of September
By the end of September, the average daytime temperature in Guernsey is around 18°C, while nighttime temps are about 14°C. A shower might pop up, but overall, the weather will be dry and sunny.
Find affordable vacations to Guernsey 
Is September a good time to visit Guernsey?
Looking for great weather? September is a good time to be in Guernsey. The temperatures are nice, and there’s not too much rain.
Temperature records for Guernsey in September
Check out the climate of Guernsey for all months and discover the best travel time
August
Plan your next vacation
Don’t miss the best vacation deals for Guernsey and see what our partners have for you.
Daily Temperature in September in Guernsey
This chart shows the average daily high and low temperatures in September for Guernsey, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in September in Guernsey
The chart below shows the average daily precipitation in September for Guernsey, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for September, you can expect about 8 days of precipitation in Guernsey.
Daily UV Index in September in Guernsey
This chart shows the average daily UV index in September in Guernsey, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Guernsey Over the Years
This chart shows the average temperature in September in Guernsey, measured in degrees Celsius, over the past few years.
Total Precipitation in September in Guernsey Over the Years
This chart shows the average precipitation in September in Guernsey, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily Climate in September for Guernsey
Click on any day in September to get detailed info about the usual weather on that day in Guernsey. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Guernsey
Have you been to Guernsey in September?
Share your weather experience in September in Guernsey.
Average Weather in Guernsey by Month
Click on a month below to see detailed weather info for Guernsey. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
