Climate Insights for Saint Helena Bay

The climate in Saint Helena Bay is temperate. The average annual temperature is 16°C and approximately 240 mm of precipitation falls per year. June is the wettest month, receiving around 54 mm of rainfall. Saint Helena Bay 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: January, February, March. The coldest months are August, July, June, when temperatures can drop to 12°C.The climate in Saint Helena Bay is temperate. The average annual temperature is 61°F and approximately 9.5 in of precipitation falls per year. June is the wettest month, receiving around 2.1 in of rainfall. Saint Helena Bay 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: January, February, March. The coldest months are August, July, June, when temperatures can drop to 53°F.

Saint Helena Bay has relatively stable temperatures year-round, staying within a 8°C range. January is the warmest month, though highs remain moderate at 20°C with a mean of 19°C. August is the coolest month, with minimum temperatures around 12°C and an average of 14°C. Daily temperature variation is modest, with an average difference of 4°C between highs and lows.Saint Helena Bay has relatively stable temperatures year-round, staying within a 15°F range. January is the warmest month, though highs remain moderate at 68°F with a mean of 65°F. August is the coolest month, with minimum temperatures around 53°F and an average of 56°F. Daily temperature variation is modest, with an average difference of 6°F between highs and lows.

Saint Helena Bay is a quite dry location, receiving approximately 240 mm of precipitation annually, which averages out to around 20 mm per month. The wettest month is June, averaging 54 mm of rainfall. July and August also tend to see above-average precipitation. The driest month is February, with just 5 mm. That's 50 mm less than June, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.Saint Helena Bay is a quite dry location, receiving approximately 9.5 in of precipitation annually, which averages out to around 0.8 in per month. The wettest month is June, averaging 2.1 in of rainfall. July and August also tend to see above-average precipitation. The driest month is February, with just 0.2 in. That's 2 in less than June, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Saint Helena Bay is moderately windy, with an average annual wind speed of 21km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 24km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in May, with average winds dropping to 16km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 8km/h gap between the calmest and windiest months. Wind tends to pick up during the summer months. The seasonal averages are 18km/h in winter, 22km/h in spring, 24km/h in summer, 18km/h in autumn.Saint Helena Bay is very windy, with an average annual wind speed of 13mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is January, averaging 15mph, which can feel quite blustery and may affect outdoor activities. The calmest conditions occur in May, with average winds dropping to 10mph, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 5mph gap between the calmest and windiest months. Wind tends to pick up during the summer months. The seasonal averages are 11mph in winter, 14mph in spring, 15mph in summer, 11mph in autumn.

The best time to visit Saint Helena Bay is during January, February, March, April, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 17°C with modest rainfall averaging 10 mm per month. By contrast, August can be quite cold with temperatures dropping to 12°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.The best time to visit Saint Helena Bay is during January, February, March, April, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 63°F with modest rainfall averaging 0.4 in per month. By contrast, August can be quite cold with temperatures dropping to 53°F. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Saint Helena Bay 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 Saint Helena Bay 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.