Bulolo, Papua New Guinea experiences average highs of 27°C (81°F) and lows of 20°C (68°F) throughout the year. Rainfall is frequent, averaging about 27 rainy days per month. High humidity combined with warm temperatures produces a tropical feel year-round. Average highs have stayed broadly stable across the available records.
Bulolo, Papua New Guinea Weather & Climate 2026
Monthly climate averages for Bulolo, Papua New Guinea. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Feb–Nov 
Wetter season: Jan–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
4.8/10
Best: May, June, July, August, September
UV Index
8
High
Temperature 27°C / 20°C
Feels Like 33°C / 24°C
Rainy Days 27
Rainfall 340 mm
Sunshine 8 h
Humidity 91%
Wind Speed 5 km/h
Dew Point 22°C
Hottest Month
28°C
January
Avg Low21°C
Rain28days
Coldest Month
19°C
July
Avg High26°C
Rain25days
Driest Month
25days
February
Avg High28°C
Avg Low21°C
Windiest Month
6 km/h
September (Gusts 33)
Worst Time to Visit
Consider avoiding January, February, December due to heavy rainfall, oppressive humidity.
Sun Position
Sunrise 06:24
Daylight 11.7h
Sunset 18:06
Live conditions—
Bulolo on the map · live conditions
Bulolo, Papua New Guinea
- Continent
- Oceania
- Country
- Papua New Guinea
- City
- Bulolo
- Population
- 16K
- Coordinates
- -7.20°, 146.64°
Seasonal Breakdown
Spring
Sep–Nov
Avg High 28°C
Avg Low 20°C
Rain 26 days/mo
1/3 best months
Summer
Dec–Feb
Avg High 28°C
Avg Low 21°C
Rain 27 days/mo
Autumn
Mar–May
Avg High 28°C
Avg Low 20°C
Rain 28 days/mo
1/3 best months
Winter
Jun–Aug
Avg High 27°C
Avg Low 19°C
Rain 25 days/mo
3/3 best months
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: 28°C / 21°C . Feb: 28°C / 21°C . Mar: 28°C / 21°C . Apr: 27°C / 20°C . May: 27°C / 20°C . Jun: 27°C / 20°C . Jul: 26°C / 19°C . Aug: 27°C / 19°C . Sep: 27°C / 19°C . Oct: 28°C / 20°C . Nov: 28°C / 20°C . Dec: 28°C / 21°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 387 mm. Feb: 356 mm. Mar: 477 mm. Apr: 430 mm. May: 303 mm. Jun: 253 mm. Jul: 234 mm. Aug: 261 mm. Sep: 341 mm. Oct: 328 mm. Nov: 292 mm. Dec: 423 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 89%. Feb: 89%. Mar: 92%. Apr: 93%. May: 92%. Jun: 92%. Jul: 91%. Aug: 91%. Sep: 91%. Oct: 91%. Nov: 90%. Dec: 90%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 5 km/h . Feb: 5 km/h . Mar: 5 km/h . Apr: 5 km/h . May: 6 km/h . Jun: 6 km/h . Jul: 6 km/h . Aug: 6 km/h . Sep: 6 km/h . Oct: 6 km/h . Nov: 5 km/h . Dec: 5 km/h .
Sunshine
Sunshine
Sunshine: Jan: 7h. Feb: 7h. Mar: 7h. Apr: 6h. May: 8h. Jun: 8h. Jul: 8h. Aug: 8h. Sep: 8h. Oct: 9h. Nov: 9h. Dec: 7h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 9. Feb: UV 8. Mar: UV 9. Apr: UV 8. May: UV 7. Jun: UV 7. Jul: UV 7. Aug: UV 8. Sep: UV 8. Oct: UV 9. Nov: UV 9. Dec: UV 9.
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 drier by about 18 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jan 2025 · 29°C | Jan · 28°C |
| Coldest month | Sep 2025 · 19°C | Jul · 19°C |
| Wettest month | Jan 2025 · 525 mm | Mar · 477 mm |
| Windiest month | Sep 2025 · 7 km/h | Sep · 6 km/h |
Month-by-Month Weather Table
January
Wet 
February
Wet March
Wet April
Wet May best
Wet June best
Wet July best
Wet August best
Wet September best
Wet October
Wet November
Wet December
Wet | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 28°C / 21°C | 34°C / 25°C | 28days (387 mm) Wet | 7.4h Good | 89% Very Muggy | 8.9 Very High | Wet | View Details |
| February | 28°C / 21°C | 34°C / 24°C | 25days (356 mm) Wet | 7h Good | 89% Very Muggy | 8.1 Very High | Wet | View Details |
| March | 28°C / 21°C | 34°C / 24°C | 30days (477 mm) Wet | 7h Good | 92% Very Muggy | 8.7 Very High | Wet | View Details |
| April | 27°C / 20°C | 33°C / 24°C | 28days (430 mm) Wet | 6.4h Fair | 93% Very Muggy | 8.3 Very High | Wet | View Details |
| May best | 27°C / 20°C | 32°C / 24°C | 27days (303 mm) Wet | 7.7h Good | 92% Very Muggy | 7.2 Very High | Wet | View Details |
| June best | 27°C / 20°C | 31°C / 23°C | 25days (253 mm) Wet | 8.3h Good | 92% Very Muggy | 7 High | Wet | View Details |
| July best | 26°C / 19°C | 31°C / 22°C | 25days (234 mm) Wet | 8.2h Good | 91% Very Muggy | 6.9 High | Wet | View Details |
| August best | 27°C / 19°C | 31°C / 23°C | 26days (261 mm) Wet | 8.4h Good | 91% Very Muggy | 7.7 Very High | Wet | View Details |
| September best | 27°C / 19°C | 32°C / 23°C | 26days (341 mm) Wet | 8.2h Good | 91% Very Muggy | 8.4 Very High | Wet | View Details |
| October | 28°C / 20°C | 33°C / 23°C | 27days (328 mm) Wet | 8.7h Good | 91% Very Muggy | 9.1 Very High | Wet | View Details |
| November | 28°C / 20°C | 34°C / 24°C | 26days (292 mm) Wet | 8.5h Good | 90% Very Muggy | 9.2 Very High | Wet | View Details |
| December | 28°C / 21°C | 34°C / 25°C | 29days (423 mm) Wet | 7.2h Good | 90% Very Muggy | 8.8 Very High | Wet | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Bulolo are May, June, July, August, September, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Bulolo, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Bulolo is January, with average daytime highs of 28°C (83°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Bulolo is July, with average overnight lows of 19°C (67°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Bulolo is March, averaging 477mm of precipitation across 30 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Bulolo runs through March, December, January, April, with the heaviest rainfall in March. Based on 10-year averages for Bulolo.
Bulolo receives approximately 93 sunshine hours per year. The sunniest month is October with around 9 hours. Based on climate data for Bulolo.
The least favorable months to visit Bulolo are January, February, December, primarily due to heavy rainfall, oppressive humidity. For the best conditions, consider May, June, July, August, September instead.
The annual average UV index in Bulolo is 8, classified as high. SPF 30+ sunscreen, sunglasses, and seeking shade between 10:00–16:00 are strongly recommended.
Average humidity in Bulolo is 91%, classified as humid. High humidity makes warm temperatures feel significantly hotter — lightweight, breathable clothing is recommended.
Average wind speeds in Bulolo are 5 km/h (3 mph). The windiest month is September with peak winds reaching 6 km/h (4 mph) (gusts up to 33 km/h / 21 mph).
Bulolo averages 0 clear-sky days per month with overall cloud cover around 92%. The clearest skies occur in June.
The annual average dew point in Bulolo is 22°C (72°F), which feels muggy and uncomfortable. Expect heavy perspiration during warmer months — stay hydrated and take breaks in air-conditioned spaces.
Bulolo 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 Bulolo ranges from 24°C (75°F) to 33°C (91°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 Bulolo, with a climate score of 5.4/10. Consider visiting during May, June, July, August, September instead for better conditions.
For June in Bulolo, pack Umbrella, Waterproof jacket, Waterproof shoes, Breathable clothing, Sunscreen (SPF 30+). With average highs of 27°C (80°F) and 25 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.
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