Climate Insights for Mamai

, Central Province, Papua New Guinea

Hottest
December
29°C peak
Coldest
August
22°C low
Wettest
March
360mm rain
Best to Visit
Varies throughout year

Climate Overview

The climate in Mamai is warm and mild. The average annual temperature is 25°C and approximately 2723mm of precipitation falls per year. Mamai receives a notable amount of rainfall throughout the year, including during its driest month. Mamai is in the Southern Hemisphere. The seasons are reversed — summer runs from December to February, while winter falls between June and August. The summer months are: December, January, March. The coldest months are August, July, September, when temperatures can drop to 22°C.

Temperature

10° 15° 20° 25° 30° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 29° Average: 26° Min: 24° Feb Max: 29° Average: 26° Min: 24° Mar Max: 29° Average: 26° Min: 24° Apr Max: 28° Average: 25° Min: 24° May Max: 28° Average: 25° Min: 23° Jun Max: 27° Average: 24° Min: 23° Jul Max: 26° Average: 24° Min: 22° Aug Max: 26° Average: 23° Min: 22° Sep Max: 27° Average: 24° Min: 22° Oct Max: 28° Average: 25° Min: 23° Nov Max: 29° Average: 26° Min: 23° Dec Max: 29° Average: 26° Min: 24°
Max
Average
Min

Mamai has relatively stable temperatures year-round, staying within a 7°C range. The warmest month is December, when average highs reach 29°C and the mean temperature sits around 26°C. August is the coolest month, with minimum temperatures around 22°C and an average of 23°C. Daily temperature variation is modest, with an average difference of 5°C between highs and lows.

Precipitation

0mm 50mm 100mm 150mm 200mm 250mm 300mm 350mm 400mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 338mm Feb Precipitation: 264mm Mar Precipitation: 360mm Apr Precipitation: 335mm May Precipitation: 233mm Jun Precipitation: 167mm Jul Precipitation: 148mm Aug Precipitation: 125mm Sep Precipitation: 161mm Oct Precipitation: 186mm Nov Precipitation: 157mm Dec Precipitation: 251mm
Precipitation

Mamai is a very wet location, receiving approximately 2723mm of precipitation annually, which averages out to around 227mm per month. The wettest month is March, averaging 360mm of rainfall. January and April also tend to see above-average precipitation. The driest month is August, with just 125mm. That's 234mm less than March, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall.

Wind

0km/h 5km/h 10km/h 15km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 10km/h Feb Wind Speed: 11km/h Mar Wind Speed: 9km/h Apr Wind Speed: 9km/h May Wind Speed: 11km/h Jun Wind Speed: 12km/h Jul Wind Speed: 12km/h Aug Wind Speed: 12km/h Sep Wind Speed: 13km/h Oct Wind Speed: 11km/h Nov Wind Speed: 10km/h Dec Wind Speed: 9km/h
Wind Speed

Mamai is relatively calm, with an average annual wind speed of 11km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is September, averaging 13km/h, though still comfortable for most outdoor activities. The calmest conditions occur in April, with average winds dropping to 9km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 4km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 12km/h in winter, 11km/h in spring, 10km/h in summer, 9km/h in autumn.

Seasons

Winter
Dec 21
Spring
Sep 23
Summer
Dec 21
Autumn
Mar 20

89 days until Winter

It is currently autumn in Mamai, which began on March 20, 2026. Mamai is in the Southern Hemisphere, where the seasons are reversed — spring starts in September, summer in December, autumn in March, and winter in June. The warmest period peaks in December at around 29°C, while the coldest stretch bottoms out in August near 22°C. Winter is next, beginning on June 21, 2026 — 89 days from now.

Spring

Temperatures range from 22 to 29°C. Rainfall is heavy, totalling around 504mm across the season with a monthly average of 168mm. Winds are generally light, averaging 11km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 24 to 29°C. Rainfall is heavy, totalling around 852mm across the season with a monthly average of 284mm. Winds are generally light, averaging 10km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.

Autumn

Temperatures range from 23 to 29°C. Rainfall is heavy, totalling around 928mm across the season with a monthly average of 309mm. Winds are generally light, averaging 9km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from 22 to 27°C. Rainfall is heavy, totalling around 440mm across the season with a monthly average of 147mm. Winds are generally light, averaging 12km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.

Monthly Climate Data

The table below shows monthly climate averages for Mamai based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
24 °C
29 °C
10 km/h
338 mm
0 cm
Feb
24 °C
29 °C
11 km/h
264 mm
0 cm
Mar Current
24 °C
29 °C
9 km/h
360 mm
0 cm
Apr
24 °C
28 °C
9 km/h
335 mm
0 cm
May
23 °C
28 °C
11 km/h
233 mm
0 cm
Jun
23 °C
27 °C
12 km/h
167 mm
0 cm
Jul
22 °C
26 °C
12 km/h
148 mm
0 cm
Aug
22 °C
26 °C
12 km/h
125 mm
0 cm
Sep
22 °C
27 °C
13 km/h
161 mm
0 cm
Oct
23 °C
28 °C
11 km/h
186 mm
0 cm
Nov
23 °C
29 °C
10 km/h
157 mm
0 cm
Dec
24 °C
29 °C
9 km/h
251 mm
0 cm
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Metric (°C, km/h)