Sibu Weather in September
Sibu in September sees very high daytime temperatures of 32°C (90°F) and nighttime lows of 24°C (75°F). As part of the rainy season, showers are frequent and often heavy. Budget around 258 mm (10 in) of rainfall for the month.
Rainfall in Sibu in September
As part of the rainy season, Sibu sees around 22 days of rain in September, with an average of 258 mm (10 in). Rain during the rainy season is significant rather than just light drizzle. Expect proper showers on most rainy days.
Temperature in Sibu in September
Daytime highs in Sibu in September reach 32°C (90°F), with nights around 24°C (75°F). For most visitors, the main thing to prepare for is the heat during the day. With overnight lows of 24°C (75°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably.
Sunshine in Sibu in September
The city usually sees around 147 hours of sunlight, indicating a moderately sunny period (despite it being part of rainy season).For additional travel inspiration, our weather planner can help you discover destinations worldwide.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Malaysia, check out our Sibu's climate page.
Sibu Temperature in September
Min Temperature
24°C (75°F)
Max Temperature
32°C (90°F)
Chance of Rain
73%
Precipitation
258 mm (10 in)
Rainy days
22 days
Sunshine
147 hours
Percentage Sunshine
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Sibu typically stay consistent throughout September, with daily highs averaging around 32°C (90°F). Nights are warm, with lows around 23°C (73°F).
Average temperatures in September
Daily Historical Precipitation
49-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Sibu in September
Browse day-by-day weather records for Sibu spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Sibu historical weather extremes in September
Based on 44 years of weather observations (1981-2025), these are the most extreme conditions recorded in Sibu.
- The warmest day in September was on September 10, 1987, with a maximum of 39°C (102°F).
- The coldest September day was on September 23, 2003, with a maximum of 24°C (75°F).
- Nighttime temperatures dropped to 21°C (70°F) on September 19, 1982, marking the coldest September night on record.
- Peak precipitation in September occurred on September 2, 1981, when 151 mm (5.9 in) of precipitation was measured.
Best Places in Malaysia in September
Find out more about the weather in Malaysia and which places have the best travel conditions in this month. See all of Malaysia in September →
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tolerable
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What to Wear in Sibu in September
Warm but pleasant conditions in Sibu in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Sibu in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Malaysia, check out our Sibu's climate page.
See the full Sibu climate overview or explore weather in Malaysia.
