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 sea temperature 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
Lalomanu's coldest month, September, generally records average temperatures ranging from a high of 27.3°C (81.1°F) to a low of 26.3°C (79.3°F).Heat index
The heat index for September is computed to be a tropical 30°C (86°F). With sustained exposure and activity, exhaustion becomes probable, resulting in heat cramps.One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
Humidity
June through September, with an average relative humidity of 78%, are the most humid months.Rainfall
September is the month with the least rainfall. Rain falls for 18.7 days and accumulates 57mm (2.24") of precipitation.Sea temperature
August and September, with an average sea temperature of 27°C (80.6°F), are months with the coldest seawater.Note: For engaging in any water activities, temperatures from 25°C (77°F) to 29°C (84.2°F) are viewed as outstanding and exceptionally pleasing for prolonged durations.
Daylight
The average length of the day in September is 12h and 2min.On the first day of the month, sunrise is at 06:29 and sunset at 18:21. On the last day of September, sunrise is at 06:08 and sunset at 18:22 +13.
Sunshine
In Lalomanu, the average sunshine in September is 7.8h.UV index
January through December, with an average maximum UV index of 7, are months with the highest UV index. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 7 in September translates into these instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Take note! Sand and water reflections strengthen the Sun's UV exposure.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
What are September temperatures in Lalomanu?
What are the most humid months in Lalomanu?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September?
When is the sea coldest?
What is the sea water temperature in September in Lalomanu?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September in Lalomanu?
What is the month with the highest UV index?
What are the months with the lowest UV index?
What is the UV index intensity in September?
Average temperature in September
Lalomanu, Samoa
- Average high temperature in September: 27.3°C
The warmest months (with the highest average high temperature) are March and April (28.7°C).
The month with the lowest average high temperature is September (27.3°C).
- Average low temperature in September: 26.3°C
The month with the highest average low temperature is January (27.6°C).
The coldest month (with the lowest average low temperature) is August (26°C).
Average pressure in September
Lalomanu, Samoa
- Average pressure in September: 1012.3mbar
The month with the highest atmospheric pressure is September (1012.3mbar).
The month with the lowest atmospheric pressure is January (1007.5mbar).
Average wind speed in September
Lalomanu, Samoa
- Average wind speed in September: 23.2km/h
The windiest month (with the highest average wind speed) is July (24.7km/h).
The calmest month (with the lowest average wind speed) is March (14.8km/h).
Average humidity in September
Lalomanu, Samoa
- Average humidity in September: 78%
The months with the highest relative humidity are June, July, August and September (78%).
The month with the lowest relative humidity is March (75%).
Average rainfall in September
Lalomanu, Samoa
- Average rainfall in September: 57mm
The wettest month (with the highest rainfall) is January (175mm).
The driest month (with the least rainfall) is September (57mm).
Average rainfall days in September
Lalomanu, Samoa
- Average rainfall days in September: 18.7 days
The month with the highest number of rainy days is April (22.7 days).
The month with the least rainy days is September (18.7 days).
Average sea temperature in September
Lalomanu, Samoa
- Average sea temperature in September: 27°C
The best months for swimming (with the highest average sea temperature) are January, February, March, April, May and December (29°C).
The coldest months (with the lowest average sea temperature) are August and September (27°C).
Average daylight in September /
Average sunshine in September
Lalomanu, Samoa
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 12h and 54min).
The month with the shortest days is June (Average daylight: 11h and 18min).
- Average sunshine in September: 7h and 5min
The month with the most sunshine is March (Average sunshine: 8h and 42min).
The month with the least sunshine is July (Average sunshine: 7h and 18min).
Average sunshine days in September
Lalomanu, Samoa
- Average sunshine days in September: 3.6 days
The month with the most sunshine days is December (10.4 days).
The month with the least sunshine days is June (2.7 days).
Average UV index in September
Lalomanu, Samoa
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover in September
Lalomanu, Samoa
- Average cloud cover in September: 44
The month with the most cloud cover is July (Cloud cover 49).
The month with the least cloud cover is March (Cloud cover 38).
Average visibility in September
Lalomanu, Samoa
- 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).
Lalomanu, Samoa
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