The valley town of Jamestown in Saint Helena, with a view of mountain slopes on both sides
Weather in September
September ushers a new lease of life to these South Atlantic islands, flourishing with the onset of spring. A gentler 5mm (0.2") rainfall allows the petals to unfurl and the leathery leaves to shine in verdant hues. Appearances of rainbows become more frequent, curving over the island landscape against the backdrop of fewer scattered clouds. Nature lovers and hikers find this month particularly delightful, with much flora and fauna revealing unique springtime behaviors. The warming trend continues with temperatures peaking at around 22°C (71.6°F), and increasing daylight clocks in at 12 hours.
On the first day of the month, sunrise is at 06:28 and sunset at 18:17. On the last day of September, in Jamestown, sunrise is at 06:05 and sunset at 18:19 GMT.
[Resources]Temperature
Jamestown sees its lowest temperatures during July through September, with an average high-temperature of 22°C (71.6°F).Rainfall
In Jamestown, during September, the rain falls for 2 days and regularly aggregates up to 5mm (0.2") of precipitation. In Jamestown, Saint Helena, Ascension and Tristan da Cunha, during the entire year, the rain falls for 40.7 days and collects up to 113mm (4.45") of precipitation.Daylight
The average length of the day in September in Jamestown is 12h and 1min.On the first day of the month, sunrise is at 06:28 and sunset at 18:17. On the last day of September, in Jamestown, sunrise is at 06:05 and sunset at 18:19 GMT.
Frequently asked questions
What part of the year is the coldest in Jamestown?
July through September, when the average high-temperature in Jamestown, Saint Helena, Ascension and Tristan da Cunha, reaches 22°C (71.6°F), are the coldest months.
What is the average September temperature in Jamestown?
The high-temperature, in September, in Jamestown, records 22°C (71.6°F), while the low-temperature is 17°C (62.6°F).
How many days does it rain in September in Jamestown?
In September, in Jamestown, Saint Helena, Ascension and Tristan da Cunha, the rain falls for 2 days. Throughout September, 5mm (0.2") of precipitation is accumulated.
What is the average length of the day in September in Jamestown?
In September, the average day length in Jamestown is 12h and 1min.
When is the sunrise / sunset in September in Jamestown?
In September, on the first day of the month, sunrise is at 06:28 and sunset at 18:17. On the last day of the month, sunrise is at 06:05 and sunset at 18:19 GMT.
Average temperature in September
Jamestown, Saint Helena, Ascension and Tristan da Cunha
- Average high temperature in September: 22°C
The warmest month (with the highest average high temperature) is March (28°C).
The months with the lowest average high temperature are July, August and September (22°C).
- Average low temperature in September: 17°C
The month with the highest average low temperature is March (22°C).
The coldest months (with the lowest average low temperature) are July, August and September (17°C).
Average rainfall in September
Jamestown, Saint Helena, Ascension and Tristan da Cunha
- Average rainfall in September: 5mm
The wettest month (with the highest rainfall) is March (20mm).
The driest month (with the least rainfall) is November (0mm).
Average rainfall days in September
Jamestown, Saint Helena, Ascension and Tristan da Cunha
- Average rainfall days in September: 2 days
The month with the highest number of rainy days is July (8 days).
The month with the least rainy days is November (0 days).
Average daylight in September
Jamestown, Saint Helena, Ascension and Tristan da Cunha
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 13h and 6min).
The month with the shortest days is June (Average daylight: 11h and 12min).
Jamestown, Saint Helena, Ascension and Tristan da Cunha
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