Climate Insights for May River

, East Sepik Province, Papua New Guinea

Hottest
December
32°C peak
Coldest
July
24°C low
Wettest
March
579mm rain
Best to Visit
Varies throughout year

Climate Overview

The climate in May River is hot. The average annual temperature is 27°C and approximately 4819mm of precipitation falls per year. May River receives a notable amount of rainfall throughout the year, including during its driest month. May River sits near the equator, so seasonal temperature differences are minimal throughout the year.

Temperature

10° 20° 30° 40° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 32° Average: 27° Min: 25° Feb Max: 32° Average: 27° Min: 25° Mar Max: 31° Average: 27° Min: 25° Apr Max: 31° Average: 27° Min: 25° May Max: 32° Average: 28° Min: 25° Jun Max: 31° Average: 27° Min: 24° Jul Max: 31° Average: 27° Min: 24° Aug Max: 31° Average: 27° Min: 24° Sep Max: 32° Average: 27° Min: 24° Oct Max: 32° Average: 27° Min: 24° Nov Max: 32° Average: 27° Min: 24° Dec Max: 32° Average: 28° Min: 25°
Max
Average
Min

May River has relatively stable temperatures year-round, staying within a 8°C range. The warmest month is December, when average highs reach 32°C and the mean temperature sits around 28°C. July is the coolest month, with minimum temperatures around 24°C and an average of 27°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows.

Precipitation

0mm 50mm 100mm 150mm 200mm 250mm 300mm 350mm 400mm 450mm 500mm 550mm 600mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 536mm Feb Precipitation: 477mm Mar Precipitation: 579mm Apr Precipitation: 559mm May Precipitation: 243mm Jun Precipitation: 261mm Jul Precipitation: 215mm Aug Precipitation: 261mm Sep Precipitation: 327mm Oct Precipitation: 380mm Nov Precipitation: 463mm Dec Precipitation: 519mm
Precipitation

May River is a very wet location, receiving approximately 4819mm of precipitation annually, which averages out to around 402mm per month. The wettest month is March, averaging 579mm of rainfall. April and January also tend to see above-average precipitation. The driest month is July, with just 215mm. That's 364mm 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 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 1km/h Feb Wind Speed: 1km/h Mar Wind Speed: 1km/h Apr Wind Speed: 1km/h May Wind Speed: 1km/h Jun Wind Speed: 1km/h Jul Wind Speed: 1km/h Aug Wind Speed: 1km/h Sep Wind Speed: 1km/h Oct Wind Speed: 1km/h Nov Wind Speed: 1km/h Dec Wind Speed: 1km/h
Wind Speed

May River is relatively calm, with an average annual wind speed of 1km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 1km/h, though still comfortable for most outdoor activities. The calmest conditions occur in June, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 0km/h between the calmest and windiest months.

Seasons

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

92 days until Spring

It is currently winter in May River, which began on June 21, 2026. May River sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in December at around 32°C, while the coldest stretch bottoms out in July near 24°C. Spring is next, beginning on September 23, 2026 — 92 days from now.

Spring

Temperatures range from 24 to 32°C. Rainfall is heavy, totalling around 1170mm across the season with a monthly average of 390mm. Winds are generally light, averaging 1km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 25 to 32°C. Rainfall is heavy, totalling around 1531mm across the season with a monthly average of 510mm. Winds are generally light, averaging 1km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.

Autumn

Temperatures range from 25 to 32°C. Rainfall is heavy, totalling around 1381mm across the season with a monthly average of 460mm. Winds are generally light, averaging 1km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from 24 to 31°C. Rainfall is heavy, totalling around 737mm across the season with a monthly average of 246mm. Winds are generally light, averaging 1km/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 May River 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
25 °C
32 °C
1 km/h
536 mm
0 cm
Feb
25 °C
32 °C
1 km/h
477 mm
0 cm
Mar
25 °C
31 °C
1 km/h
579 mm
0 cm
Apr
25 °C
31 °C
1 km/h
559 mm
0 cm
May
25 °C
32 °C
1 km/h
243 mm
0 cm
Jun Current
24 °C
31 °C
1 km/h
261 mm
0 cm
Jul
24 °C
31 °C
1 km/h
215 mm
0 cm
Aug
24 °C
31 °C
1 km/h
261 mm
0 cm
Sep
24 °C
32 °C
1 km/h
327 mm
0 cm
Oct
24 °C
32 °C
1 km/h
380 mm
0 cm
Nov
24 °C
32 °C
1 km/h
463 mm
0 cm
Dec
25 °C
32 °C
1 km/h
519 mm
0 cm
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