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 average high-temperature during September registers at a still moderately hot 28.1°C (82.6°F), closely corresponding to the preceding month. The September average low temperature, marginally lower than the daytime high, records at a still moderately hot 25.8°C (78.4°F).Heat index
The heat index in September is evaluated at a hot 33°C (91.4°F). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.The metrics for the heat index are tailored for both shady environments and light winds. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Humidity
In September, the average relative humidity is 81%.Rainfall
In Ngongosila, Solomon Islands, in September, during 24.3 rainfall days, 122mm (4.8") of precipitation is typically accumulated. Throughout the year, there are 329.1 rainfall days, and 2481mm (97.68") of precipitation is accumulated.Daylight
In September, the average length of the day in Ngongosila is 12h and 4min.On the first day of the month, sunrise is at 06:17 and sunset at 18:14. On the last day of September, sunrise is at 06:00 and sunset at 18:11 +11.
Sunshine
The average sunshine in September is 8.4h.UV index
The months with the highest UV index are April through September and November, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 7 in September translates into this advice:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September?
How many days does it rain in September?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the month with the highest UV index?
What is the UV index reading in September?
Average temperature in September
Ngongosila, Solomon Islands
- Average high temperature in September: 28.1°C
The warmest months (with the highest average high temperature) are April and May (28.8°C).
The month with the lowest average high temperature is August (27.9°C).
- Average low temperature in September: 25.8°C
The month with the highest average low temperature is May (26.6°C).
The coldest months (with the lowest average low temperature) are August and September (25.8°C).
Average pressure in September
Ngongosila, Solomon Islands
- Average pressure in September: 1010.2mbar
The month with the highest atmospheric pressure is August (1010.4mbar).
The month with the lowest atmospheric pressure is January (1006.9mbar).
Average wind speed in September
Ngongosila, Solomon Islands
- Average wind speed in September: 14.5km/h
The windiest month (with the highest average wind speed) is July (16.2km/h).
The calmest month (with the lowest average wind speed) is December (8.4km/h).
Average humidity in September
Ngongosila, Solomon Islands
- Average humidity in September: 81%
The month with the highest relative humidity is July (82%).
The months with the lowest relative humidity are January, February, March, November and December (79%).
Average rainfall in September
Ngongosila, Solomon Islands
- Average rainfall in September: 122mm
The wettest month (with the highest rainfall) is March (305mm).
The driest month (with the least rainfall) is August (118mm).
Average rainfall days in September
Ngongosila, Solomon Islands
- Average rainfall days in September: 24.3 days
The month with the highest number of rainy days is March (29.5 days).
The month with the least rainy days is August (24 days).
Average daylight in September /
Average sunshine in September
Ngongosila, Solomon Islands
- Average daylight in September: 12h and 1min
The month with the longest days is December (Average daylight: 12h and 36min).
The month with the shortest days is June (Average daylight: 11h and 36min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is November (Average sunshine: 10h and 18min).
The month with the least sunshine is July (Average sunshine: 7h and 18min).
Average sunshine days in September
Ngongosila, Solomon Islands
- Average sunshine days in September: 3 days
The month with the most sunshine days is August (3.8 days).
The months with the least sunshine days are January, March and December (0.5 days).
Average UV index in September
Ngongosila, Solomon Islands
- Average UV index in September: 7
The months with the highest UV index are April, May, June, July, August, September and November (UV index 7).
The months with the lowest UV index are January, February, March, October and December (UV index 6).
Average cloud cover in September
Ngongosila, Solomon Islands
- Average cloud cover in September: 42
The month with the most cloud cover is July (Cloud cover 48).
The month with the least cloud cover is November (Cloud cover 40).
Average visibility in September
Ngongosila, Solomon Islands
- Average visibility in September: 10km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, February, March, April, May, October, November and December (9km).
Ngongosila, Solomon Islands
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