Biak Weather in September

September in Biak brings high temperatures, with highs of 29°C (84°F) and nights dropping to 26°C (79°F). The rainy season is in full swing this month, so frequent downpours are part of the picture.

Rainfall in Biak in September

Biak is in the rainy season in September, with rain on around 18 days and an average of 208 mm (8.2 in). Rainfall this month is frequent and tends to be fairly heavy when it does fall. Packing waterproofs is a good idea.

Temperature in Biak in September

Expect highs of 29°C (84°F) in Biak in September, with nights dropping to around 26°C (79°F). Overall, the month follows a fairly predictable daily temperature pattern. With overnight lows of 26°C (79°F), nights stay very warm. Air conditioning makes a real difference if you're sensitive to heat. A cold shower before bed can also help you get to sleep more comfortably.

Sunshine in Biak in September

The area enjoys a moderate level of sunlight, with around 120 hours. It's a good balance between sunny and rainy days.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.

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Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Indonesia, check out our Biak's climate page.

Biak Temperature in September

Min Temperature 26°C (79°F)  

Max Temperature 29°C (84°F)  

Chance of Rain 58%  

Precipitation 208 mm (8.2 in)  

Rainy days 18 days  

Sunshine 120 hours  

Percentage Sunshine  

What to Wear in Biak in September

Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Biak in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

7/10

Cycling

7/10

Walking

7/10

Camping

7/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Indonesia, check out our Biak's climate page.

More climate data for Biak

Temperature Rainfall Sunshine

See the full Biak climate overview or explore weather in Indonesia.