Wewak, Papua New Guinea experiences average highs of 29°C (84°F) and lows of 25°C (77°F) throughout the year. Rainfall is frequent, averaging about 26 rainy days per month. Sunshine is abundant, averaging about 9 hours per day. High humidity combined with warm temperatures produces a tropical feel year-round. Average highs have stayed broadly stable across the available records.
Wewak, Papua New Guinea Weather & Climate 2026
Monthly climate averages for Wewak, Papua New Guinea. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Sep 
Wetter season: Apr–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
2/10
Annual
UV Index
8
High
Temperature 29°C / 25°C
Feels Like 36°C / 30°C
Rainy Days 26
Rainfall 264 mm
Sunshine 9 h
Humidity 88%
Wind Speed 12 km/h
Dew Point 25°C
Hottest Month
30°C
January
Avg Low25°C
Rain26days
Coldest Month
25°C
June
Avg High29°C
Rain27days
Driest Month
23days
February
Avg High29°C
Avg Low25°C
Windiest Month
15 km/h
February (Gusts 33)
Sea Temperature
29°C – 30°C
Warmest water: May (
30.4°C
)
Sun Position
Sunrise 06:30
Daylight 11.9h
Sunset 18:25
Live conditions—
Wewak on the map · live conditions
Wewak, Papua New Guinea
- Continent
- Oceania
- Country
- Papua New Guinea
- City
- Wewak
- Population
- 18.2K
- Coordinates
- -3.55°, 143.63°
Seasonal Breakdown
Spring
Sep–Nov
Avg High 29°C
Avg Low 25°C
Rain 26 days/mo
Summer
Dec–Feb
Avg High 30°C
Avg Low 25°C
Rain 25 days/mo
Autumn
Mar–May
Avg High 29°C
Avg Low 25°C
Rain 27 days/mo
Winter
Jun–Aug
Avg High 29°C
Avg Low 25°C
Rain 26 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: 30°C / 25°C . Feb: 29°C / 25°C . Mar: 30°C / 25°C . Apr: 29°C / 25°C . May: 29°C / 25°C . Jun: 29°C / 25°C . Jul: 29°C / 25°C . Aug: 29°C / 25°C . Sep: 29°C / 25°C . Oct: 30°C / 25°C . Nov: 30°C / 25°C . Dec: 30°C / 25°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 224 mm. Feb: 218 mm. Mar: 264 mm. Apr: 312 mm. May: 269 mm. Jun: 265 mm. Jul: 276 mm. Aug: 229 mm. Sep: 251 mm. Oct: 272 mm. Nov: 300 mm. Dec: 287 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 87%. Feb: 87%. Mar: 87%. Apr: 88%. May: 88%. Jun: 89%. Jul: 89%. Aug: 88%. Sep: 87%. Oct: 88%. Nov: 88%. Dec: 88%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 13 km/h . Feb: 15 km/h . Mar: 13 km/h . Apr: 11 km/h . May: 10 km/h . Jun: 11 km/h . Jul: 10 km/h . Aug: 12 km/h . Sep: 12 km/h . Oct: 11 km/h . Nov: 11 km/h . Dec: 12 km/h .
Sunshine
Sunshine
Sunshine: Jan: 9h. Feb: 8h. Mar: 8h. Apr: 9h. May: 9h. Jun: 9h. Jul: 8h. Aug: 9h. Sep: 9h. Oct: 9h. Nov: 9h. Dec: 8h.
Sea Temperature
Sea Temperature
Line chart showing monthly sea temperature. Jan: 30°C . Feb: 29°C . Mar: 30°C . Apr: 30°C . May: 30°C . Jun: 30°C . Jul: 29°C . Aug: 29°C . Sep: 29°C . Oct: 30°C . Nov: 30°C . Dec: 30°C .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 8. Feb: UV 8. Mar: UV 8. Apr: UV 8. May: UV 7. Jun: UV 7. Jul: UV 7. Aug: UV 8. Sep: UV 8. Oct: UV 8. Nov: UV 8. Dec: UV 8.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy
Climate Trends
Average highs have stayed broadly stable across the available records. Average rainfall has remained broadly steady.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jan 2025 · 30°C | Jan · 30°C |
| Coldest month | Jul 2025 · 25°C | Jun · 25°C |
| Wettest month | Aug 2025 · 367 mm | Apr · 312 mm |
| Windiest month | Feb 2025 · 13 km/h | Feb · 15 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 | 30°C / 25°C | 36°C / 30°C | 26days (224 mm) Wet | 8.9h Good | 87% Very Muggy | 8 Very High | Wet | View Details |
| February | 29°C / 25°C | 35°C / 30°C | 23days (218 mm) Wet | 8.1h Good | 87% Very Muggy | 7.7 Very High | Wet | View Details |
| March | 30°C / 25°C | 36°C / 30°C | 26days (264 mm) Wet | 8.1h Good | 87% Very Muggy | 8.1 Very High | Wet | View Details |
| April | 29°C / 25°C | 36°C / 31°C | 27days (312 mm) Wet | 8.6h Good | 88% Very Muggy | 7.9 Very High | Wet | View Details |
| May | 29°C / 25°C | 36°C / 31°C | 28days (269 mm) Wet | 9.1h Good | 88% Very Muggy | 7.1 Very High | Wet | View Details |
| June | 29°C / 25°C | 35°C / 30°C | 27days (265 mm) Wet | 8.8h Good | 89% Very Muggy | 7.1 Very High | Wet | View Details |
| July | 29°C / 25°C | 35°C / 30°C | 26days (276 mm) Wet | 8.2h Good | 89% Very Muggy | 6.9 High | Wet | View Details |
| August | 29°C / 25°C | 35°C / 30°C | 26days (229 mm) Wet | 8.8h Good | 88% Very Muggy | 7.7 Very High | Wet | View Details |
| September | 29°C / 25°C | 36°C / 30°C | 25days (251 mm) Wet | 9.1h Good | 87% Very Muggy | 8.2 Very High | Wet | View Details |
| October | 30°C / 25°C | 36°C / 30°C | 27days (272 mm) Wet | 9.2h Good | 88% Very Muggy | 8.1 Very High | Wet | View Details |
| November | 30°C / 25°C | 36°C / 30°C | 27days (300 mm) Wet | 8.7h Good | 88% Very Muggy | 8 Very High | Wet | View Details |
| December | 30°C / 25°C | 36°C / 31°C | 27days (287 mm) Wet | 8.1h Good | 88% Very Muggy | 7.5 Very High | Wet | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The hottest month in Wewak is January, with average daytime highs of 30°C (85°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Wewak is June, with average overnight lows of 25°C (76°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Wewak is April, averaging 312mm of precipitation across 27 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Wewak runs through May, April, June, October, with the heaviest rainfall in May. Based on 10-year averages for Wewak.
Wewak receives approximately 104 sunshine hours per year. The sunniest month is October with around 9 hours. Based on climate data for Wewak.
The annual average UV index in Wewak is 8, classified as high. SPF 30+ sunscreen, sunglasses, and seeking shade between 10:00–16:00 are strongly recommended.
Average humidity in Wewak is 88%, classified as humid. High humidity makes warm temperatures feel significantly hotter — lightweight, breathable clothing is recommended.
Yes — sea temperatures in January, February, March, April, May, June, July, August, September, October, November, December average 30°C (86°F), which is warm and comfortable for swimming and water activities.
Average wind speeds in Wewak are 12 km/h (7 mph). The windiest month is February with peak winds reaching 15 km/h (9 mph) (gusts up to 33 km/h / 21 mph).
Wewak averages 0 clear-sky days per month with overall cloud cover around 85%. The clearest skies occur in June.
The annual average dew point in Wewak is 25°C (77°F), which feels oppressively humid. Expect heavy perspiration during warmer months — stay hydrated and take breaks in air-conditioned spaces.
Wewak has a Tropical Rainforest climate, classified as Af under the Köppen system. Tropical climates are warm year-round with high rainfall and temperatures rarely dropping below 18°C (64°F).
The 'feels like' temperature in Wewak ranges from 30°C (86°F) to 36°C (97°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 Wewak, with a climate score of 2.1/10. Consider visiting during — instead for better conditions.
For June in Wewak, pack Umbrella, Waterproof jacket, Waterproof shoes, Breathable clothing, Sunscreen (SPF 30+). With average highs of 29°C (84°F) and 27 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: