Bulolo in Spring
In spring (September, October and November), Bulolo sees average daytime highs around 22°C and overnight lows near 15°C, with 764 mm of rain over about 76 wet days across the season. It is the 3rd-warmest season and the 3rd-wettest season.
Across spring, daytime highs hold fairly steady around 22°C. The sky is clear or mostly clear about 3% of the time across spring, and the air most often feels humid.
Spring is Bulolo's 2nd-best season to visit on our travel score. Bulolo has little temperature swing across the year, so its calendar seasons blur — the season framing matters less here than for a place with four distinct seasons. For the whole year in context, see Bulolo's year-round climate.
- Avg daytime high
- 22°C
- 3rd-warmest season
- Avg overnight low
- 15°C
- Rainfall
- 764 mm
- 76 wet days
- Avg wind
- 3 km/h
- Travel score
- 4.1
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Bulolo in Spring
Across spring, daytime highs hold fairly steady around 22°C.
A typical spring day in Bulolo reaches about 22°C and drops to 15°C overnight. The warmest of the three months is November, the coolest September.
Bulolo weather by month
How the three spring months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 24° / 16° | 364 | 26.7 | 12.4 | 4.0 |
| Feb | 24° / 16° | 320 | 24 | 12.2 | 4.0 |
| Mar | 24° / 16° | 382 | 27.5 | 12 | 3.9 |
| Apr | 23° / 16° | 309 | 26 | 11.8 | 3.9 |
| May | 22° / 15° | 244 | 26 | 11.7 | 4.1 |
| Jun | 22° / 15° | 204 | 24 | 11.6 | 4.2 |
| Jul | 21° / 15° | 199 | 24.8 | 11.6 | 4.1 |
| Aug | 21° / 15° | 213 | 24.7 | 11.8 | 4.1 |
| Sep | 22° / 15° | 240 | 24.6 | 12 | 4.1 |
| Oct | 22° / 15° | 253 | 25.5 | 12.2 | 4.1 |
| Nov | 23° / 16° | 271 | 25.8 | 12.3 | 4.0 |
| Dec | 23° / 16° | 359 | 27.7 | 12.4 | 3.9 |
Cloud cover in Spring
The sky is clear or mostly clear about 3% of the time across spring.
Chance of precipitation in Spring
Bulolo gets around 764 mm of rain over 76 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 3 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 54 min in early September to 12 h 24 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Spring
Average shortwave solar energy reaching the ground each day across spring, about 4.9 kWh/m².
Hazard calendar for Bulolo
In spring, Bulolo overlaps its cyclone season. The full year is below, with each hazard's peak months called out.
Bulolo sits in the South Indian Ocean cyclone belt; the season peaks January–March.
Is spring a good time to visit Bulolo?
Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
spring is a reasonable time to visit Bulolo for sightseeing.
What to pack for Bulolo in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Bulolo sees daytime highs around 22°C and nights near 15°C. Pack rain gear. Worth having: light clothes and sun protection. About 76 days see rain.
Sea temperature near Bulolo in Spring
The nearest coast averages about 29°C across spring — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 54 km away) is warmest in January at about 30°C and coldest in August near 28°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 30 | 30 | 30 | 30 | 29 | 29 | 28 | 28 | 28 | 29 | 30 | 30 |
| Comfort | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Warm | Tropical | Tropical | Tropical | Tropical |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 30 | Tropical |
| Feb | 30 | Tropical |
| Mar | 30 | Tropical |
| Apr | 30 | Tropical |
| May | 29 | Tropical |
| Jun | 29 | Tropical |
| Jul | 28 | Tropical |
| Aug | 28 | Warm |
| Sep | 28 | Tropical |
| Oct | 29 | Tropical |
| Nov | 30 | Tropical |
| Dec | 30 | Tropical |
UV index in Bulolo in Spring
Clear-sky midday UV across spring averages around 15 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Bulolo peaks around March 12 at about 17 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 11 (extreme).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 16 | 17 | 17 | 15 | 13 | 11 | 12 | 13 | 15 | 15 | 14 | 14 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 16 | Extreme |
| Feb | 17 | Extreme |
| Mar | 17 | Extreme |
| Apr | 15 | Extreme |
| May | 13 | Extreme |
| Jun | 11 | Extreme |
| Jul | 12 | Extreme |
| Aug | 13 | Extreme |
| Sep | 15 | Extreme |
| Oct | 15 | Extreme |
| Nov | 14 | Extreme |
| Dec | 14 | Extreme |
Where is Bulolo?
Bulolo sits at 7.2°S, 146.6°E, 677 m above sea level, in Papua New Guinea. The nearest listed city is Lae, 66 km away.
Topography around Bulolo
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Bulolo.
Within 3 km, the terrain around Bulolo has significant variations in elevation — a maximum elevation change of 419 m around an average of 710 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,809 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,433 m.
The land around Bulolo is covered by trees (56%) and grassland (39%) within 3 km, trees (76%) and grassland (24%) within 16 km, and trees (79%) within 80 km.
Papua New Guinea travel facts
- Travel advisory
- Level 3
- Reconsider Travel
- Power plugs
- Type I
- 240 V · 50 Hz
- Prices
- ≈ 58% of US
- price level, 2025
- GDP per capita
- $3,020
- 2025
- Homicide rate
- 9.3
- per 100k, 2010
- Road deaths
- 12.6
- per 100k/yr, 2019
- Income group
- Lower middle
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Bulolo (-7.2036°, 146.6401°, elevation 677 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.