September weather forecast and climate
Miri, Malaysia

Weather in September

The first month of the autumn, September, is also a hot month in Miri, Malaysia, with average temperature ranging between min 25.5°C (77.9°F) and max 31.3°C (88.3°F).

Temperature

In September, the average high-temperature remains equal as in August - a still hot 31.3°C (88.3°F). In September, in Miri, the average low-temperature is 25.5°C (77.9°F).

Heat index

In September, the average heat index is appraised at a blistering 40.4°C (104.7°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'real feel', 'felt air temperature', or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like pregnancy, metabolic differences, wind, and activity influence one's weather impression. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

In Miri, the average relative humidity is 76%.

Rainfall

The month with the least rainfall is September when the rain falls for 22.5 days and typically collects 79mm (3.11") of precipitation.

Sea temperature

In Miri, the average seawater temperature is 29.7°C (85.5°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

In Miri, the average length of the day is 12.1h.

Sunshine

The month with the most sunshine is September, with an average of 9h of sunshine.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Miri. Months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health hazard from the exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 7 transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the temperature in September in Miri?

The average high-temperature, in September, in Miri, is 31.3°C (88.3°F), while the average low-temperature is 25.5°C (77.9°F). In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines relative humidity and air temperature, is appraised at 40.4°C (104.7°F).

What is the average humidity in September in Miri?

In Miri, the average relative humidity in September is 76%.

What is the driest month in Miri?

The month with the least rainfall in Miri, Malaysia, is September when the rain falls for 22.5 days and typically collects 79mm (3.11") of precipitation.

How many days does it rain in September in Miri?

In Miri, Malaysia, during September, the rain falls for 22.5 days and regularly aggregates up to 79mm (3.11") of precipitation.

What is the water temperature in September in Miri?

In Miri, Malaysia, in September, the average water temperature is 29.7°C (85.5°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does Miri have in September?

In Miri, Malaysia, the average length of the day in September is 12.1h.

What month has the most sunshine in Miri?

With an average of 9h of sunshine, September has the most sunshine of the year.

How many hours of sunshine does Miri have in September?

In September, the average sunshine in Miri, Malaysia, is 9h.

What are the months with the highest UV index in Miri?

Months with the highest UV index in Miri, Malaysia, are January through December, with an average maximum UV index of 7.

What is the month with the lowest UV index in Miri?

Months with the lowest UV index in Miri, Malaysia, are January through December, with an average maximum UV index of 7.

What is the UV index reading in September in Miri?

In Miri, Malaysia, the average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV radiation.

Average temperature in September
Miri, Malaysia

Average temperature in September - Miri, Malaysia
  • Average high temperature in September: 31.3°C

The warmest month (with the highest average high temperature) is May (31.7°C).
The month with the lowest average high temperature is February (29.4°C).

  • Average low temperature in September: 25.5°C

The month with the highest average low temperature is May (25.7°C).
The coldest month (with the lowest average low temperature) is February (24.6°C).

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Average pressure in September
Miri, Malaysia

Average pressure in September - Miri, Malaysia
  • Average pressure in September: 1009.9mbar

Months with the highest atmospheric pressure are February and March (1010.1mbar).
Months with the lowest atmospheric pressure are November and December (1008.9mbar).

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Average wind speed in September
Miri, Malaysia

Average wind speed in September - Miri, Malaysia
  • Average wind speed in September: 8.7km/h

The windiest month (with the highest average wind speed) is February (10.2km/h).
The calmest month (with the lowest average wind speed) is May (7.4km/h).

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Average humidity in September
Miri, Malaysia

Average humidity in September - Miri, Malaysia
  • Average humidity in September: 76%

Months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is August (75%).

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Average rainfall in September
Miri, Malaysia

Average rainfall in September - Miri, Malaysia
  • Average rainfall in September: 79mm

The wettest month (with the highest rainfall) is December (214mm).
The driest month (with the least rainfall) is September (79mm).

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Average rainfall days in September
Miri, Malaysia

Average rainfall days in September - Miri, Malaysia
  • Average rainfall days in September: 22.5 days

The month with the highest number of rainy days is December (27.3 days).
The month with the least rainy days is June (20.4 days).

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Average sea temperature in September
Miri, Malaysia

Average sea temperature in September - Miri, Malaysia
  • Average sea temperature in September: 29.7°C

The best months for swimming (with the highest average sea temperature) are June and July (30.3°C).
The coldest month (with the lowest average sea temperature) is February (27.1°C).

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Average daylight in September /
Average sunshine in September
Miri, Malaysia

Average daylight in September / Average sunshine in September - Miri, Malaysia
  • Average daylight in September: 12.1h

Months with the longest days are June and July (Average daylight: 12.4h).
Months with the shortest days are January, November and December (Average daylight: 11.9h).

  • Average sunshine in September: 9h

The month with the most sunshine is September (Average sunshine: 9h).
The month with the least sunshine is January (Average sunshine: 7.6h).

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Average sunshine days in September
Miri, Malaysia

Average sunshine days in September - Miri, Malaysia
  • Average sunshine days in September: 6.2 days

The month with the most sunshine days is August (8.3 days).
The month with the least sunshine days is December (2.9 days).

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Average UV index in September
Miri, Malaysia

Average UV index in September - Miri, Malaysia
  • Average UV index in September: 7

Months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).

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Average cloud cover in September
Miri, Malaysia

Average cloud cover in September - Miri, Malaysia
  • Average cloud cover in September: 36

The month with the most cloud cover is January (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 35).

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Average visibility in September
Miri, Malaysia

Average visibility in September - Miri, Malaysia
  • Average visibility in September: 10km

Months with the highest visibility are February, March, April, May, June, July, August, September, October and November (10km).
Months with the lowest visibility are January and December (9km).

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