September weather forecastSibu, Malaysia
September
Weather in September
A shift towards increased rainfall happens in September, setting grounds for the stormy quarter of the year. Gradual warming indicates an annual pattern of rising temperatures, which normally extends into the subsequent month of October. The average high temperature in September is 32.2°C (90°F), a slight drop from August. September is a month with fair temperatures and an increased likelihood of rain, making it an excellent time for indoor activities. Despite the increased probability of rain, the daylight hours remain plentiful.Temperature
The transition into September notes an average high-temperature of a still tropical 32.2°C (90°F), revealing a mild distinction from the 32.6°C (90.7°F) in August. Throughout September, Sibu anticipates an average low-temperature of 22.7°C (72.9°F).Rainfall
In Sibu, in September, it is raining for 16 days, with typically 278mm (10.94") of accumulated precipitation. Throughout the year, in Sibu, Malaysia, there are 193 rainfall days, and 3229mm (127.13") of precipitation is accumulated.Daylight
In Sibu, the average length of the day in September is 12h and 8min.On the first day of September, sunrise is at 6:27 am and sunset at 6:37 pm. On the last day of the month, sunrise is at 6:19 am and sunset at 6:25 pm +08.
Sunshine
In Sibu, the average sunshine in September is 5h.UV index
January through May, July through December, with an average maximum UV index of 12, are months with the highest UV index in Sibu. A UV Index estimate of 11, and higher, represents an excessive health risk from unsafe exposure to UV radiation for average individuals.Note: In September, a daily maximum UV index of 12 leads to the following instructions:
Adopt every vital precaution, unprotected skin and eyes may burn rapidly. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Opt for tightly woven and loose clothing to enhance protection from the Sun. Apply generously and frequently a broad-spectrum SPF 30+ sunscreen every two hours, or immediately after swimming or any outdoor exercise.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sibu, Malaysia
- Average high temperature in September: 32.2°C
The warmest month (with the highest average high temperature) is May (33°C).
The month with the lowest average high temperature is December (30.3°C).
- Average low temperature in September: 22.7°C
The month with the highest average low temperature is May (23.1°C).
The coldest month (with the lowest average low temperature) is July (22.5°C).
Average rainfall in September
Sibu, Malaysia
- Average rainfall in September: 277.5mm
The wettest month (with the highest rainfall) is January (368.3mm).
The driest month (with the least rainfall) is July (168.2mm).
Average rainfall days in September
Sibu, Malaysia
- Average rainfall days in September: 16 days
The month with the highest number of rainy days is December (20 days).
The months with the least rainy days are June and July (12 days).
Average daylight in September /
Average sunshine in September
Sibu, Malaysia
- Average daylight in September: 12h and 6min
The month with the longest days is June (Average daylight: 12h and 18min).
The month with the shortest days is December (Average daylight: 12h and 0min).
- Average sunshine in September: 5h and 0min
The month with the most sunshine is July (Average sunshine: 6h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average UV index in September
Sibu, Malaysia
- Average UV index in September: 12
The months with the highest UV index are January, February, March, April, May, July, August, September, October, November and December (UV index 12).
The month with the lowest UV index is June (UV index 11).





