Climate Insights for Mendi

, Southern Highlands Province, Papua New Guinea

Hottest
February
22°C peak
Coldest
August
13°C low
Wettest
October
558mm rain
Best to Visit
Varies throughout year

Climate Overview

The climate in Mendi is temperate. The average annual temperature is 16°C and approximately 5429mm of precipitation falls per year. Mendi receives a notable amount of rainfall throughout the year, including during its driest month. Mendi sits near the equator, so seasonal temperature differences are minimal throughout the year.

Temperature

10° 15° 20° 25° 30° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 22° Average: 17° Min: 13° Feb Max: 22° Average: 17° Min: 13° Mar Max: 22° Average: 17° Min: 14° Apr Max: 21° Average: 17° Min: 14° May Max: 21° Average: 17° Min: 13° Jun Max: 20° Average: 16° Min: 13° Jul Max: 20° Average: 16° Min: 13° Aug Max: 20° Average: 16° Min: 13° Sep Max: 20° Average: 16° Min: 13° Oct Max: 21° Average: 16° Min: 13° Nov Max: 22° Average: 16° Min: 13° Dec Max: 22° Average: 17° Min: 13°
Max
Average
Min

Mendi has relatively stable temperatures year-round, staying within a 9°C range. February is the warmest month, though highs remain moderate at 22°C with a mean of 17°C. August is the coolest month, with minimum temperatures around 13°C and an average of 16°C. Daily temperature variation is modest, with an average difference of 8°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: 394mm Feb Precipitation: 314mm Mar Precipitation: 497mm Apr Precipitation: 518mm May Precipitation: 504mm Jun Precipitation: 452mm Jul Precipitation: 430mm Aug Precipitation: 459mm Sep Precipitation: 533mm Oct Precipitation: 558mm Nov Precipitation: 370mm Dec Precipitation: 400mm
Precipitation

Mendi is a very wet location, receiving approximately 5429mm of precipitation annually, which averages out to around 452mm per month. The wettest month is October, averaging 558mm of rainfall. September and April also tend to see above-average precipitation. The driest month is February, with just 314mm. That's 244mm less than October, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around.

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

Mendi 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 August, averaging 1km/h, though still comfortable for most outdoor activities. The calmest conditions occur in April, 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

93 days until Spring

It is currently winter in Mendi, which began on June 21, 2026. Mendi sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in February at around 22°C, while the coldest stretch bottoms out in August near 13°C. Spring is next, beginning on September 23, 2026 — 93 days from now.

Spring

Temperatures range from 13 to 22°C. Rainfall is heavy, totalling around 1461mm across the season with a monthly average of 487mm. Winds are generally light, averaging 1km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 13 to 22°C. Rainfall is heavy, totalling around 1107mm across the season with a monthly average of 369mm. Winds are generally light, averaging 1km/h. Comfortable clothing with a light layer for cooler evenings is all you need.

Autumn

Temperatures range from 13 to 22°C. Rainfall is heavy, totalling around 1520mm across the season with a monthly average of 507mm. Winds are generally light, averaging 1km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from 13 to 20°C. Rainfall is heavy, totalling around 1341mm across the season with a monthly average of 447mm. 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 Mendi 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
13 °C
22 °C
1 km/h
394 mm
0 cm
Feb
13 °C
22 °C
1 km/h
314 mm
0 cm
Mar
14 °C
22 °C
1 km/h
497 mm
0 cm
Apr
14 °C
21 °C
1 km/h
518 mm
0 cm
May
13 °C
21 °C
1 km/h
504 mm
0 cm
Jun Current
13 °C
20 °C
1 km/h
452 mm
0 cm
Jul
13 °C
20 °C
1 km/h
430 mm
0 cm
Aug
13 °C
20 °C
1 km/h
459 mm
0 cm
Sep
13 °C
20 °C
1 km/h
533 mm
0 cm
Oct
13 °C
21 °C
1 km/h
558 mm
0 cm
Nov
13 °C
22 °C
1 km/h
370 mm
0 cm
Dec
13 °C
22 °C
1 km/h
400 mm
0 cm
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