Climate Overview
The climate in Annan is cool. The average annual temperature is 10°C and approximately 1225mm of precipitation falls per year. Annan receives a notable amount of rainfall throughout the year, including during its driest month. Annan is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are February, January, March, when temperatures can drop to 3°C. Light snow can occur between January and December.
Temperature
Annan sees moderate temperature variation throughout the year, ranging from 3°C to 18°C. July is the warmest month, though highs remain moderate at 18°C with a mean of 15°C. February is the coolest month, with minimum temperatures around 3°C and an average of 5°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows. The sharpest temperature change occurs between October and November, with a 3°C shift in average temperatures.
Precipitation
Annan is a fairly wet location, receiving approximately 1225mm of precipitation annually, which averages out to around 102mm per month. The wettest month is August, averaging 131mm of rainfall. February and December also tend to see above-average precipitation. The driest month is May, with just 49mm. That's 82mm less than August, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall. Light snowfall can occur between January and December, totalling around 24cm annually. February is the snowiest month with approximately 8cm.
Wind
Annan is relatively calm, with an average annual wind speed of 4km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 5km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 4km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.
Seasons
92 days until Autumn
It is currently summer in Annan, which began on June 21, 2026. Annan is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 18°C, while the coldest stretch bottoms out in February near 3°C. Autumn is next, beginning on September 23, 2026 — 92 days from now.
Spring
Temperatures range from 3 to 15°C. Precipitation is moderate at around 209mm for the season, averaging 70mm per month. Winds are generally light, averaging 4km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 11 to 18°C. Rainfall is heavy, totalling around 350mm across the season with a monthly average of 117mm. Winds are generally light, averaging 4km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 4 to 16°C. Rainfall is heavy, totalling around 323mm across the season with a monthly average of 108mm. Winds are generally light, averaging 4km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 3 to 8°C. Rainfall is heavy, totalling around 343mm across the season with a monthly average of 114mm. Expect around 16cm of snow accumulation during this period. Winds are generally light, averaging 5km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Monthly Climate Data
The table below shows monthly climate averages for Annan based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.
