ClimateAverages

St Anne Climate

Alderney, Guernsey · 146 weather stations within 200 km · records 1750 to 2025

Average annual daytime high
13.3°C
Warmest month · August
18.6°C
Typical daytime high
Coldest month · February
4.7°C
Typical overnight low

St Anne has an average annual daytime high of 13.3°C, based on the 1951 to 1980 baseline. Its warmest month is August, when highs typically reach 18.6°C, and its coldest is February, with overnight lows near 4.7°C.

Month by month averages

MonthAvg highAvg low
January8.4°C5.0°C
February8.3°C4.7°CColdest
March9.7°C5.6°C
April11.3°C6.9°C
May14.1°C9.3°C
June16.4°C11.6°C
July18.1°C13.4°C
August18.6°C14.2°CWarmest
September17.6°C13.3°C
October15.1°C11.0°C
November11.7°C7.9°C
December9.7°C6.1°C

Temperature range across the year

3°7°12°16°21°JanFebMarAprMayJunJulAugSepOctNovDec
Daytime high Overnight low
Hottest year on record
2006
+2.0°C vs. 1951–1980
Coldest year on record
1784
-1.7°C vs. 1951–1980

These figures reflect annual averages, not single-day records. Daily observations are outside this dataset's precision.

Is St Anne getting hotter?

Since 1900, St Anne's average temperature has risen by +2.1°C. Compared to the earliest station records that begin in 1750, warming totals +2.5°C.

10.6°11.3°11.9°12.6°13.2°1951–1980 baseline190019251950197520002025

20-year smoothed annual temperature reconstructed from station anomalies. Dashed line: 1951–1980 baseline.

Best time to visit
June to October

Daytime highs sit within a comfortable 15°C to 26°C range.

FAQ

What is the average temperature in St Anne?

St Anne's average annual daytime high is 13.3°C, based on the 1951 to 1980 baseline period. The warmest month is August, with highs averaging 18.6°C, and the coldest is February, with lows averaging 4.7°C.

What is the warmest month in St Anne?

August is the warmest month in St Anne, with typical daytime highs of 18.6°C.

What is the hottest year on record for St Anne?

2006 is the hottest year on record for St Anne, running +2.0°C above the 1951 to 1980 baseline.

Is St Anne getting hotter?

Yes. Since 1900, St Anne has warmed by roughly +2.1°C.

When is the best time to visit St Anne?

June to October typically offers the most comfortable daytime highs, in the 15°C to 26°C range.

Baseline period 1951 to 1980. Monthly averages are the mean of station observations weighted by proximity. Warming trend is the 20-year smoothed anomaly against that baseline.