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| | Weather in September in Jamestown |  |
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| < September > |
| Normal Max/ High Temperature |
22°C (72°F) |
| Average Temperature |
20°C (68°F) |
| Min/ Low Temperature |
17°C (63°F) |
| Normal Precipitation |
5mm (0.2in) |
| Number of Wet Days (probability of rain on a day) |
2 (7%) |
| Average Daylight per day |
12:02 |
| Sun altitude at solar noon on the 21st day. |
73.4° |
- The average temperature in Jamestown in September is warm at 20 °C (68 °F).
- Afternoons can be really warm with average high temperatures reaching 22 °C (71.6 °F).
- Overnight temperatures are generally very mild with an average low of 17 °C (62.6 °F).
- In September there is a range/ variation of mean diurnal temperatures of 5 °C (9 °F).
- The weather in September is arid with scarcely any rain. An airy 5mm (0.2in) of H2O descends during an average of 2 days.
- The shortest day is 11:48 long and the longest day is 12:15 long with an average length of 12:02.
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Weather Trend Graph for September in Jamestown, Saint Helena
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