Mendi, Papua New Guinea experiences average highs of 21°C (70°F) and lows of 14°C (57°F) throughout the year. Rainfall is frequent, averaging about 30 rainy days per month. Average highs have stayed broadly stable across the available records.
Mendi, Papua New Guinea Weather & Climate 2026
Monthly climate averages for Mendi, Papua New Guinea. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Dec 
Wetter season: Mar–May At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
6.8/10
Annual
UV Index
8
High
Temperature 21°C / 14°C
Feels Like 24°C / 15°C
Rainy Days 30
Rainfall 549 mm
Sunshine 8 h
Humidity 93%
Wind Speed 9 km/h
Dew Point 17°C
Hottest Month
22°C
January
Avg Low14°C
Rain30days
Coldest Month
14°C
August
Avg High21°C
Rain30days
Driest Month
27days
February
Avg High22°C
Avg Low14°C
Windiest Month
10 km/h
January (Gusts 34)
Sun Position
Sunrise 06:34
Daylight 11.8h
Sunset 18:20
Live conditions—
Mendi on the map · live conditions
Mendi, Papua New Guinea
- Continent
- Oceania
- Country
- Papua New Guinea
- City
- Mendi
- Population
- 26.3K
- Coordinates
- -6.15°, 143.66°
Seasonal Breakdown
Spring
Sep–Nov
Avg High 22°C
Avg Low 14°C
Rain 29 days/mo
Summer
Dec–Feb
Avg High 22°C
Avg Low 14°C
Rain 29 days/mo
Autumn
Mar–May
Avg High 22°C
Avg Low 14°C
Rain 31 days/mo
Winter
Jun–Aug
Avg High 21°C
Avg Low 14°C
Rain 30 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 22°C / 14°C . Feb: 22°C / 14°C . Mar: 22°C / 14°C . Apr: 22°C / 14°C . May: 22°C / 15°C . Jun: 21°C / 14°C . Jul: 21°C / 14°C . Aug: 21°C / 14°C . Sep: 21°C / 14°C . Oct: 22°C / 14°C . Nov: 22°C / 14°C . Dec: 22°C / 14°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 566 mm. Feb: 390 mm. Mar: 632 mm. Apr: 659 mm. May: 604 mm. Jun: 475 mm. Jul: 456 mm. Aug: 507 mm. Sep: 659 mm. Oct: 643 mm. Nov: 480 mm. Dec: 518 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 92%. Feb: 92%. Mar: 93%. Apr: 94%. May: 94%. Jun: 93%. Jul: 94%. Aug: 93%. Sep: 93%. Oct: 93%. Nov: 92%. Dec: 92%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 10 km/h . Feb: 10 km/h . Mar: 9 km/h . Apr: 8 km/h . May: 8 km/h . Jun: 8 km/h . Jul: 8 km/h . Aug: 9 km/h . Sep: 9 km/h . Oct: 9 km/h . Nov: 9 km/h . Dec: 9 km/h .
Sunshine
Sunshine
Sunshine: Jan: 8h. Feb: 7h. Mar: 7h. Apr: 7h. May: 8h. Jun: 8h. Jul: 8h. Aug: 8h. Sep: 8h. Oct: 8h. Nov: 8h. Dec: 8h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 8. Feb: UV 9. Mar: UV 8. Apr: UV 8. May: UV 7. Jun: UV 7. Jul: UV 7. Aug: UV 7. Sep: UV 8. Oct: UV 9. Nov: UV 9. Dec: UV 8.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Climate Trends
Average highs have stayed broadly stable across the available records. Average rainfall is trending wetter by about 118 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jan 2025 · 23°C | Jan · 22°C |
| Coldest month | Oct 2025 · 13°C | Aug · 14°C |
| Wettest month | Mar 2025 · 909 mm | Apr · 659 mm |
| Windiest month | Jan 2025 · 9 km/h | Jan · 10 km/h |
Month-by-Month Weather Table
January
Wet 
February
Wet March
Wet April
Wet May
Wet June
Wet July
Wet August
Wet September
Wet October
Wet November
Wet December
Wet | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 22°C / 14°C | 24°C / 15°C | 30days (566 mm) Wet | 7.7h Good | 92% Very Muggy | 8 Very High | Wet | View Details |
| February | 22°C / 14°C | 24°C / 15°C | 27days (390 mm) Wet | 7h Good | 92% Very Muggy | 8.5 Very High | Wet | View Details |
| March | 22°C / 14°C | 25°C / 15°C | 31days (632 mm) Wet | 7h Good | 93% Very Muggy | 8.4 Very High | Wet | View Details |
| April | 22°C / 14°C | 24°C / 15°C | 30days (659 mm) Wet | 7.1h Good | 94% Very Muggy | 7.9 Very High | Wet | View Details |
| May | 22°C / 15°C | 24°C / 16°C | 31days (604 mm) Wet | 7.7h Good | 94% Very Muggy | 7.2 Very High | Wet | View Details |
| June | 21°C / 14°C | 23°C / 14°C | 30days (475 mm) Wet | 8.3h Good | 93% Very Muggy | 7.1 Very High | Wet | View Details |
| July | 21°C / 14°C | 23°C / 15°C | 30days (456 mm) Wet | 7.8h Good | 94% Very Muggy | 6.7 High | Wet | View Details |
| August | 21°C / 14°C | 23°C / 14°C | 30days (507 mm) Wet | 7.8h Good | 93% Very Muggy | 7.4 Very High | Wet | View Details |
| September | 21°C / 14°C | 24°C / 14°C | 29days (659 mm) Wet | 7.7h Good | 93% Very Muggy | 7.7 Very High | Wet | View Details |
| October | 22°C / 14°C | 25°C / 14°C | 30days (643 mm) Wet | 7.9h Good | 93% Very Muggy | 8.5 Very High | Wet | View Details |
| November | 22°C / 14°C | 25°C / 15°C | 28days (480 mm) Wet | 8.4h Good | 92% Very Muggy | 8.5 Very High | Wet | View Details |
| December | 22°C / 14°C | 25°C / 15°C | 30days (518 mm) Wet | 7.5h Good | 92% Very Muggy | 8.1 Very High | Wet | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The hottest month in Mendi is January, with average daytime highs of 22°C (71°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Mendi is August, with average overnight lows of 14°C (57°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Mendi is April, averaging 659mm of precipitation across 30 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Mendi runs through March, May, January, April, with the heaviest rainfall in March. Based on 10-year averages for Mendi.
Mendi receives approximately 92 sunshine hours per year. The sunniest month is November with around 8 hours. Based on climate data for Mendi.
The annual average UV index in Mendi is 8, classified as high. SPF 30+ sunscreen, sunglasses, and seeking shade between 10:00–16:00 are strongly recommended.
Average humidity in Mendi is 93%, classified as humid. High humidity makes warm temperatures feel significantly hotter — lightweight, breathable clothing is recommended.
Average wind speeds in Mendi are 9 km/h (6 mph). The windiest month is January with peak winds reaching 10 km/h (6 mph) (gusts up to 34 km/h / 21 mph).
Mendi averages 0 clear-sky days per month with overall cloud cover around 94%. The clearest skies occur in January.
The annual average dew point in Mendi is 17°C (63°F), which feels noticeably humid. Summer months may feel slightly sticky, but conditions remain manageable for most people.
Mendi has a Oceanic climate, classified as Cfb under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Mendi ranges from 15°C (59°F) to 24°C (75°F) on average. Humidity and radiant heat mean it often feels warmer than the thermometer reads, especially in summer months.
June is not the best time to visit Mendi, with a climate score of 6.9/10. Consider visiting during — instead for better conditions.
For June in Mendi, pack Umbrella, Waterproof jacket, Waterproof shoes, Sunscreen (SPF 30+), Sunglasses. With average highs of 21°C (70°F) and 30 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
Last updated: