Rabaul Weather in May
During May, Rabaul experiences high daytime temperatures of 29°C (84°F) and cooler nights around 26°C (79°F). May sits within the rainy season, so expect regular and often heavy rainfall.
Rainfall in Rabaul in May
Rabaul is in the rainy season in May, with rain on around 21 days and an average of 207 mm (8.1 in). Rainfall this month is frequent and tends to be fairly heavy when it does fall. Packing waterproofs is a good idea.
Temperature in Rabaul in May
In May, Rabaul gets high temperatures, with highs of 29°C (84°F). Nights cool to around 26°C (79°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. Nights stay warm at around 26°C (79°F), so light bedding and good ventilation are worth thinking about.
Sunshine in Rabaul in May
Expect a lot of sunshine this month, with about 198 hours of sun. Showers typically arrive in the late afternoon or evening, keeping mornings and early afternoons sunny. Even during the wet season, there's plenty of sunshine for sightseeing.
Wind Speed in Rabaul in May
Average wind conditions reach 2 m/s (4 knots) in May. This creates comfortable weather with light winds that gently move vegetation. Keep in mind this is an average. Daily conditions range from near-calm to more noticeable wind.
Average water temperature in May
With water at 28°C (82°F), you can expect warm, pleasant conditions for any water activity. There's no adjustment period — it feels comfortable straight away.If you prefer dry days with pleasant temperatures, June, August, September and October typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Papua New Guinea, check out our Rabaul's climate page.
Rabaul Temperature in May
Min Temperature
26°C (79°F)
Max Temperature
29°C (84°F)
Water Temperature
28°C (82°F)
Chance of Rain
71%
Precipitation
207 mm (8.1 in)
Rainy days
21 days
Humidity
75%
Windspeed
2 m/s (4 knots)
Sunshine
198 hours
Percentage Sunshine
Daily Historical Temperatures
30-year average (1986-2025)
Based on our historical records, temperatures in Rabaul typically stay consistent throughout May, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in May
Historical weather for Rabaul in May
Browse day-by-day weather records for Rabaul spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Rabaul historical weather extremes in May
Based on 20 years of weather observations (2006-2026), these are the most extreme conditions recorded in Rabaul.
- On May 10, 2023, temperatures climbed to 32°C (90°F), marking the warmest May day on record.
- The lowest daytime temperature in May was 27°C (81°F), recorded on May 19, 2015.
- Rabaul registered its coldest May night on May 24, 2008, with temperatures dropping to 24°C (75°F).
- The wettest May day on record brought 137 mm (5.4 in) of precipitation to Rabaul (May 24, 2023).
Best Places in Papua New Guinea in May
Find out more about the weather in Papua New Guinea and which places have the best travel conditions in this month. See all of Papua New Guinea in May →
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What to Wear in Rabaul in May
Warm but pleasant conditions in Rabaul in May. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. Expect water temperatures of around 28°C (82°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Rabaul in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Papua New Guinea, check out our Rabaul's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Rabaul climate overview or explore weather in Papua New Guinea.
