Climate Insights for St. Lucia

The climate in St. Lucia is warm and mild. The average annual temperature is 23°C and approximately 1,230 mm of precipitation falls per year. St. Lucia receives a notable amount of rainfall throughout the year, including during its driest month. St. Lucia is in the Southern Hemisphere. The seasons are reversed: summer runs from December to February, while winter falls between June and August. The summer months are: February, March, January. The coldest months are July, August, June, when temperatures can drop to 19°C.The climate in St. Lucia is warm and mild. The average annual temperature is 73°F and approximately 48.4 in of precipitation falls per year. St. Lucia receives a notable amount of rainfall throughout the year, including during its driest month. St. Lucia is in the Southern Hemisphere. The seasons are reversed: summer runs from December to February, while winter falls between June and August. The summer months are: February, March, January. The coldest months are July, August, June, when temperatures can drop to 66°F.

St. Lucia has relatively stable temperatures year-round, staying within a 7°C range. The warmest month is February, when average highs reach 26°C and the mean temperature sits around 26°C. July is the coolest month, with minimum temperatures around 19°C and an average of 20°C. Daily temperature variation is modest, with an average difference of 2°C between highs and lows.St. Lucia has relatively stable temperatures year-round, staying within a 13°F range. The warmest month is February, when average highs reach 79°F and the mean temperature sits around 78°F. July is the coolest month, with minimum temperatures around 66°F and an average of 69°F. Daily temperature variation is modest, with an average difference of 4°F between highs and lows.

St. Lucia is a fairly wet location, receiving approximately 1,230 mm of precipitation annually, which averages out to around 103 mm per month. The wettest month is February, averaging 170 mm of rainfall. March and April also tend to see above-average precipitation. The driest month is August, with just 49 mm. That's 121 mm less than February, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall.St. Lucia is a fairly wet location, receiving approximately 48.4 in of precipitation annually, which averages out to around 4.1 in per month. The wettest month is February, averaging 6.7 in of rainfall. March and April also tend to see above-average precipitation. The driest month is August, with just 1.9 in. That's 4.8 in less than February, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall.

St. Lucia is moderately windy, with an average annual wind speed of 26km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is October, averaging 29km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in March, with average winds dropping to 24km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 5km/h between the calmest and windiest months.St. Lucia is very windy, with an average annual wind speed of 16mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is October, averaging 18mph, which can feel quite blustery and may affect outdoor activities. The calmest conditions occur in March, with average winds dropping to 15mph, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 3mph between the calmest and windiest months.

The best time to visit St. Lucia is during June, July, August, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 21°C with modest rainfall averaging 65 mm per month. By contrast, February can be uncomfortably hot with temperatures reaching 26°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.The best time to visit St. Lucia is during June, July, August, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 70°F with modest rainfall averaging 2.6 in per month. By contrast, February can be uncomfortably hot with temperatures reaching 79°F. 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 St. Lucia 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. 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.The table below shows monthly climate averages for St. Lucia based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.