September weather forecast
Redang Island, Malaysia

The rocky white sandy shores of the Marine Park in Redang Island, Malaysia
The rocky white sandy shores of the Marine Park in Redang Island, Malaysia

September

Weather in September

September’s weather in Redang Island sees a significant increase in precipitation, recording a 235mm (9.25") rainfall that marks the onset of wetter months. Despite this, the island retains its vibrant appeal amidst the rains, with the typically high sea temperatures ensuring ideal conditions for watersports. Maintaining a good balance between sunlit and rainy periods, the island continues to attract nature lovers and adventure seekers. Evening temperatures remain consistently warm, great for relaxed, outdoor evenings. Thus, September’s varying weather continues to uphold Redang Island's undeniable charm.

Temperature

Redang Island commences September with an average high-temperature of a still tropical 31°C (87.8°F), maintaining the same temperature as the previous month. Throughout September, the average low-temperature in Redang Island, Malaysia, records at a warm 23°C (73.4°F).

Rainfall

In Redang Island, in September, it is raining for 18 days, with typically 235mm (9.25") of accumulated precipitation. Throughout the year, there are 181 rainfall days, and 3099mm (122.01") of precipitation is accumulated.

Sea temperature

In Redang Island, the average seawater temperature in September is 29°C (84.2°F).
Note: For water activities like swimming, diving, and more, temperatures ranging between 25°C (77°F) and 29°C (84.2°F) offer superior comfort and enjoyment for lengthy durations.

Daylight

In September, the average length of the day in Redang Island is 12h and 9min.
On the first day of the month, sunrise is at 7:01 am and sunset at 7:14 pm. On the last day of September, sunrise is at 6:55 am and sunset at 7:00 pm +08.

Sunshine

In Redang Island, the average sunshine in September is 6h.

UV index

The months with the highest UV index are January through May, July through November, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an excessive health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index of 12 in September converts into the following recommendations:
Practice all-important precautions. Light skin people may get burned in less than 5 minutes. 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-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Broad-spectrum sunscreen with an SPF of 30 or above should be applied generously and reapplied every two hours and right after any outdoor activity or swim. Caution! The mirror effect of sand and water ups the UV radiation strength.

Frequently asked questions

Is it hot during September?
The high-temperature, in September, in Redang Island, is 31°C (87.8°F), while the low-temperature averages to 23°C (73.4°F).
How much does it rain in September?
In Redang Island, during September, the rain falls for 18 days and regularly aggregates up to 235mm (9.25") of precipitation.
How warm is the water in September?
In Redang Island, in September, the average water temperature is 29°C (84.2°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.
What is the average length of the day in September?
In Redang Island, Malaysia, the average day length in September is 12h and 9min.
When are sunrise and sunset in September?
In September, on the first day of the month, sunrise is at 7:01 am and sunset at 7:14 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 7:00 pm +08.
How many hours of sunshine does Redang Island have in September?
The average sunshine duration in September in Redang Island is 6h.
What is the month with the highest UV index?
The months with the highest UV index are January through May, July through November, with an average maximum UV index of 12.
How high is the UV index in September?
In September, the average daily maximum UV index in Redang Island is 12. A UV Index estimate of 11, and higher, represents an extreme health threat from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average rainfall
Average rainfall days
Average sea temperature
Average daylight
Average sunshine
Average UV index
Average temperature in September - Redang Island, Malaysia
Average temperature in September
Redang Island, Malaysia
  • Average high temperature in September: 31°C

The warmest months (with the highest average high temperature) are April, May and June (32°C).
The months with the lowest average high temperature are January and December (28°C).

  • Average low temperature in September: 23°C

The month with the highest average low temperature is May (24°C).
The coldest month (with the lowest average low temperature) is January (22°C).

Average rainfall in September - Redang Island, Malaysia
Average rainfall in September
Redang Island, Malaysia
  • Average rainfall in September: 235mm

The wettest month (with the highest rainfall) is December (661mm).
The driest month (with the least rainfall) is April (93mm).

Average rainfall days in September - Redang Island, Malaysia
Average rainfall days in September
Redang Island, Malaysia
  • Average rainfall days in September: 18 days

The month with the highest number of rainy days is November (24 days).
The months with the least rainy days are February and March (9 days).

Average sea temperature in September - Redang Island, Malaysia
Average sea temperature in September
Redang Island, Malaysia
  • Average sea temperature in September: 29°C

The best months for swimming (with the highest average sea temperature) are May and June (30°C).
The coldest months (with the lowest average sea temperature) are January, February and December (27°C).

Average daylight in September / Average sunshine in September - Redang Island, Malaysia
Average daylight in September /
Average sunshine in September
Redang Island, Malaysia
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 12h and 30min).
The month with the shortest days is December (Average daylight: 11h and 48min).

  • Average sunshine in September: 6h

The months with the most sunshine are March and April (Average sunshine: 8h).
The month with the least sunshine is December (Average sunshine: 4h).

Average UV index in September - Redang Island, Malaysia
Average UV index in September
Redang Island, Malaysia
  • Average UV index in September: 12

The months with the highest UV index are January, February, March, April, May, July, August, September, October and November (UV index 12).
The months with the lowest UV index are June and December (UV index 11).

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