Alotau Weather & Climate: Best Time to Visit

Average temperatures, rainfall, sunshine and the best time to visit Alotau.

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Forecast Temperature Rainfall Sunshine

Climate overview of Alotau

Alotau, Papua New Guinea, serves as a gateway to the Milne Bay islands. It’s known for its war history, vibrant culture, and island-hopping opportunities. The town has a steady, warm climate throughout the year and is also characterized by heavy rainfall. Now, let’s explore all the climate details to give you a complete picture.

Alotau Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Alotau - and find the best time to visit.

January

31°C (88°F)View January → February

31°C (88°F)View February → March

30°C (86°F)View March → April

30°C (86°F)View April → May

29°C (84°F)View May → June

28°C (82°F)View June → This monthJuly

27°C (81°F)View July → August

27°C (81°F)View August → September

28°C (82°F)View September → October

29°C (84°F)View October → November

30°C (86°F)View November → December

31°C (88°F)View December →

Monthly Temperature in Alotau

With minimal seasonal shifts, Alotau experiences a constant climate year-round. Typically, average maximum daytime temperatures range from a very warm 31°C (88°F) in February to a comfortable 27°C (81°F) in the coolest month, July.

Nights vary from 24°C (75°F) in February to around 22°C (72°F) during the colder months.

Check out our detailed temperature page for more information.

Temperature ranges by month

More Temperature details →

Rainfall in Alotau

Alotau has a notably wet climate with abundant precipitation, recording 3079 mm (121 in) of rainfall per year. Alotau offers a pleasant mix of wetter and slightly drier months. The difference in precipitation between the wettest month February (331 mm (13 in)) and the driest month July (193 mm (7.6 in)) is not too significant. For more details, please visit our Alotau Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

More Rainfall details →

Humidity in Alotau by Month

The relative humidity is high throughout the year in Alotau.

The city experiences its highest humidity in June, reaching 84%. In January, the humidity drops to its lowest level at 75%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year

Data from: Sideia, Papua New Guinea (42 KM, 26 Miles).

More Humidity details →

Best Time to Visit Alotau

The most favourable weather available in Alotau usually occurs in July and August. Conditions are generally most challenging in January, February, March, April, May, June, November and December.

Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.

Jan very wet Feb very wet Mar very wet Apr very wet May very wet Jun very wet Jul good Aug good Sep mixed Oct mixed Nov very wet Dec very wet

Best overall: July and August
Warmest weather: January, February, March, April, November and December

Frequently asked questions about the climate in Alotau

What is the best time to visit Alotau?

July and August typically offer the most optimal weather in Alotau. In contrast, January, February, March, April, May, June, November and December tend to have less optimal conditions.

What temperatures can I expect in Alotau?

Daytime highs range from 27°C (81°F) in July to 31°C (88°F) in February. Nighttime lows range from 22°C (72°F) to 24°C (75°F). Temperatures stay relatively stable year-round.