Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The high-temperature average in September for Napier is a still enjoyable 16.9°C (62.4°F), staying closely aligned with August's conditions. Throughout September, Napier's nights experience a slight temperature dip to a fresh 12.8°C (55°F).Humidity
In September, the average relative humidity in Napier is 76%.Rainfall
In Napier, South Africa, during September, the rain falls for 14 days and regularly aggregates up to 26mm (1.02") of precipitation. In Napier, during the entire year, the rain falls for 148.7 days and collects up to 308mm (12.13") of precipitation.Daylight
In Napier, the average length of the day in September is 11h and 53min.On the first day of September, sunrise is at 06:58 and sunset at 18:22. On the last day of the month, sunrise is at 06:17 and sunset at 18:42 SAST.
Sunshine
In Napier, the average sunshine in September is 8.1h.UV index
The months with the lowest UV index are June through September, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 4 during September translates into the following recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Frequently asked questions
What is the usual temperature for Napier in September?
What is the average humidity in September in Napier?
How much does it rain in Napier in September?
How many hours of daylight does Napier have in September?
What time are sunrise and sunset in September in Napier?
How many hours of sunshine does Napier have in September?
What is the month with the lowest UV index in Napier?
What is the UV index reading in September in Napier?
Average temperature in September
Napier, South Africa
- Average high temperature in September: 16.9°C
The warmest month (with the highest average high temperature) is February (22.7°C).
The month with the lowest average high temperature is August (16.1°C).
- Average low temperature in September: 12.8°C
The month with the highest average low temperature is February (19.3°C).
The coldest month (with the lowest average low temperature) is August (12°C).
Average pressure in September
Napier, South Africa
- Average pressure in September: 1019.3mbar
The month with the highest atmospheric pressure is July (1021.7mbar).
The month with the lowest atmospheric pressure is February (1014mbar).
Average wind speed in September
Napier, South Africa
- Average wind speed in September: 24km/h
The windiest month (with the highest average wind speed) is October (24.4km/h).
The calmest month (with the lowest average wind speed) is May (20.7km/h).
Average humidity in September
Napier, South Africa
- Average humidity in September: 76%
The months with the highest relative humidity are February and March (77%).
The month with the lowest relative humidity is June (73%).
Average rainfall in September
Napier, South Africa
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is June (51mm).
The driest month (with the least rainfall) is February (11mm).
Average rainfall days in September
Napier, South Africa
- Average rainfall days in September: 14 days
The month with the highest number of rainy days is September (14 days).
The month with the least rainy days is February (10.6 days).
Average daylight in September /
Average sunshine in September
Napier, South Africa
- Average daylight in September: 11h and 5min
The month with the longest days is December (Average daylight: 14h and 24min).
The month with the shortest days is June (Average daylight: 9h and 54min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is November (Average sunshine: 9h and 54min).
The month with the least sunshine is June (Average sunshine: 6h and 12min).
Average sunshine days in September
Napier, South Africa
- Average sunshine days in September: 12.4 days
The month with the most sunshine days is May (15.8 days).
The month with the least sunshine days is September (12.4 days).
Average UV index in September
Napier, South Africa
- Average UV index in September: 4
The month with the highest UV index is February (UV index 6).
The months with the lowest UV index are June, July, August and September (UV index 4).
Average cloud cover in September
Napier, South Africa
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 39).
The month with the least cloud cover is May (Cloud cover 31).
Average visibility in September
Napier, South Africa
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Napier, South Africa
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