Climate Insights for Darien

The climate in Darien is temperate. The average annual temperature is 13°C and approximately 962mm of precipitation falls per year. Darien receives a notable amount of rainfall throughout the year, including during its driest month. Darien 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 January, February, December, when temperatures can drop to -2°C. Snowfall occurs from January to December, with around 95cm accumulating over the season.

Temperatures in Darien vary considerably across the year, with a 31°C difference between the coldest and warmest months. The warmest month is July, when average highs reach 29°C and the mean temperature sits around 25°C. The coldest month is January, when overnight lows fall to -2°C and the daily average is 1°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows. The sharpest temperature change occurs between September and October, with a 7°C shift in average temperatures.

Darien is a moderately rainy area, receiving approximately 962mm of precipitation annually, which averages out to around 80mm per month. The wettest month is February, averaging 129mm of rainfall. July and May also tend to see above-average precipitation. The driest month is March, with just 42mm. That's 87mm less than February, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall. Snowfall is a regular feature from January to December, with around 95cm accumulating over the season. January typically sees the most snow at around 35cm.

Darien is relatively calm, with an average annual wind speed of 3km/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 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.

It is currently summer in Darien, which began on June 21, 2026. Darien 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 29°C, while the coldest stretch bottoms out in January near -2°C. Autumn is next, beginning on September 23, 2026 — 51 days from now.

The best time to visit Darien is during May, June, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 68mm per month. By contrast, July can be uncomfortably hot with highs reaching 29°C, while January is the coldest period with lows dropping to -2°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Darien 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.