September weather forecast
Bandar Lampung, Indonesia

As September rolls in, the weather in Bandar Lampung begins to display subtle signs of change. The dry, warm season persists, yet rainfall slightly starts to increase, indicating a gradual shift towards the wetter months. September poses as a transition month where beach lovers can still enjoy warm sea temperatures before they start to decrease. As September progresses, it sets the stage for the moderately rainier month of October. The weather, however, remains generally warm and inviting.

Temperature

September's advent notes a subtle adjustment in average high-temperature to a still tropical 31°C (87.8°F) from August. Bandar Lampung's average low-temperature during September nights is observed to be a pleasant 21°C (69.8°F).

Rainfall

In September, the rain falls for 10 days. Throughout September, 99mm (3.9") of precipitation is accumulated. Throughout the year, in Bandar Lampung, there are 173 rainfall days, and 1977mm (77.83") of precipitation is accumulated.

Sea temperature

September is the month with the coldest seawater, with an average sea temperature of 28.3°C (82.9°F).
Note: Water temperatures between 25°C (77°F) and 29°C (84.2°F) are ideal for swimming, diving, and other activities, ensuring comfort and enjoyment for lengthened periods.

Daylight

The average length of the day in September in Bandar Lampung, Indonesia, is 12h and 5min.
On the first day of September in Bandar Lampung, sunrise is at 05:58 and sunset at 17:59. On the last day of the month, sunrise is at 05:44 and sunset at 17:53 WIB.

Sunshine

The months with the most sunshine are May, July through September, with an average of 8h of sunshine.

UV index

The months with the highest UV index in Bandar Lampung are January through April, August through December, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an extreme health hazard from unsafe exposure to UV radiation for the average person.
Note: The UV index of 12 during September leads to these advisories:
Carry out all crucial safety measures, unprotected skin may burn instantly. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Broad-spectrum SPF 30+ sunscreen must be generously applied and reapplied every two hours or post any outdoor activity or swim. Be vigilant! The Sun's UV rays get a boost from sand and water reflections.