Climate and monthly weather forecast
Weather in January
January and March, with an average sea temperature of 17.3°C (63.1°F), are months with the warmest seawater in Saint Helena Bay, South Africa. Note: Swimming is not a pleasant activity for most individuals in 17.3°C (63.1°F). Weather in January »
Weather in February
In Saint Helena Bay, South Africa, the average seawater temperature in February is 17.2°C (63°F). Note: Swimming in water that is 17.2°C (63°F) is not enjoyable for most. Weather in February »
Weather in March
January and March, with an average sea temperature of 17.3°C (63.1°F), are months with the warmest seawater in Saint Helena Bay, South Africa. Note: The majority of individuals find swimming in 17.3°C (63.1°F) to be unenjoyable. Weather in March »
Weather in April
In Saint Helena Bay, South Africa, in April, the average water temperature is 15.4°C (59.7°F). Note: Most individuals do not find swimming at 15.4°C (59.7°F) to be enjoyable. Weather in April »
Weather in May
In Saint Helena Bay, South Africa, the average seawater temperature in May is 15.3°C (59.5°F). Note: Swimming in 15.3°C (59.5°F) is not an enjoyable experience for most. Weather in May »
Weather in June
In Saint Helena Bay, South Africa, the average seawater temperature in June is 15.1°C (59.2°F). Note: Swimming is not enjoyable for most people in water that is 15.1°C (59.2°F). Weather in June »
Weather in July
With an average sea temperature of 14.4°C (57.9°F), July is the month with the coldest seawater in Saint Helena Bay, South Africa. Note: It is life-risking to swim in 14.4°C (57.9°F). Weather in July »
Weather in August
In Saint Helena Bay, South Africa, the average seawater temperature in August is 14.5°C (58.1°F). Note: Danger awaits those who swim in 14.5°C (58.1°F) without protection. Weather in August »
Weather in September
In Saint Helena Bay, South Africa, in September, the average water temperature is 14.9°C (58.8°F). Note: To swim in 14.9°C (58.8°F) at less than 10°C (50°F), ensure you're well-protected. Weather in September »
Weather in October
In Saint Helena Bay, South Africa, the average seawater temperature in October is 15.6°C (60.1°F). Note: In 15.6°C (60.1°F), swimming is not an enjoyable activity for most. Weather in October »
Weather in November
In Saint Helena Bay, South Africa, the average seawater temperature in November is 16.2°C (61.2°F). Note: Most people find swimming in 16.2°C (61.2°F) unenjoyable. Weather in November »
Weather in December
In Saint Helena Bay, South Africa, the average seawater temperature in December is 16.7°C (62.1°F). Note: For most, swimming in 16.7°C (62.1°F) is not a pleasant experience. Weather in December »
Updated: Jan 25, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the months with the warmest sea water in Saint Helena Bay?
The months with the warmest seawater in Saint Helena Bay are January and March, with an average sea temperature of 17.3°C (63.1°F).
What is the month with the shortest days in Saint Helena Bay?
June has the shortest days of the year, with an average of 10h and 0min of daylight.
What is the month with the coldest sea water in Saint Helena Bay?
With an average sea temperature of 14.4°C (57.9°F), July is the month with the coldest seawater in Saint Helena Bay.
When are the longest days in Saint Helena Bay?
December has the longest days of the year, with an average of 14h and 18min of daylight.
Is there Daylight Saving Time (DST) in Saint Helena Bay?
Saint Helena Bay, South Africa, does not observe Daylight Saving Time (DST). SAST timezone is used over the entire year.
Average sea temperature
Saint Helena Bay, South Africa
The best months for swimming (with the highest average sea temperature) are January and March (17.3°C).
The coldest month (with the lowest average sea temperature) is July (14.4°C).
Average daylight
Saint Helena Bay, South Africa
- Average daylight in January:
14h and 0min - Average daylight in February:
13h and 2min - Average daylight in March:
12h and 2min - Average daylight in April:
11h and 2min - Average daylight in May:
10h and 2min - Average daylight in June:
10h and 0min
- Average daylight in July:
10h and 1min - Average daylight in August:
11h and 0min - Average daylight in September:
11h and 5min - Average daylight in October:
12h and 5min - Average daylight in November:
13h and 5min - Average daylight in December:
14h and 2min
The month with the longest days is December (Average daylight: 14h and 18min).
The month with the shortest days is June (Average daylight: 10h and 0min).
