Climate Insights for Open Bay

, West New Britain Province, Papua New Guinea

Hottest
May
28°C peak
Coldest
March
24°C low
Wettest
March
499mm rain
Best to Visit
Varies throughout year

Climate Overview

The climate in Open Bay is hot. The average annual temperature is 25°C and approximately 4161mm of precipitation falls per year. Open Bay receives a notable amount of rainfall throughout the year, including during its driest month. Open Bay sits near the equator, so seasonal temperature differences are minimal throughout the year.

Temperature

10° 15° 20° 25° 30° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 27° Average: 25° Min: 24° Feb Max: 27° Average: 25° Min: 24° Mar Max: 27° Average: 25° Min: 24° Apr Max: 27° Average: 25° Min: 24° May Max: 28° Average: 26° Min: 24° Jun Max: 27° Average: 25° Min: 24° Jul Max: 27° Average: 25° Min: 24° Aug Max: 27° Average: 25° Min: 24° Sep Max: 28° Average: 25° Min: 24° Oct Max: 28° Average: 25° Min: 24° Nov Max: 28° Average: 25° Min: 24° Dec Max: 27° Average: 25° Min: 24°
Max
Average
Min

Open Bay has relatively stable temperatures year-round, staying within a 4°C range. The warmest month is May, when average highs reach 28°C and the mean temperature sits around 26°C. March is the coolest month, with minimum temperatures around 24°C and an average of 25°C. Daily temperature variation is modest, with an average difference of 3°C between highs and lows.

Precipitation

0mm 50mm 100mm 150mm 200mm 250mm 300mm 350mm 400mm 450mm 500mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 476mm Feb Precipitation: 494mm Mar Precipitation: 499mm Apr Precipitation: 408mm May Precipitation: 280mm Jun Precipitation: 185mm Jul Precipitation: 276mm Aug Precipitation: 304mm Sep Precipitation: 230mm Oct Precipitation: 280mm Nov Precipitation: 312mm Dec Precipitation: 419mm
Precipitation

Open Bay is a very wet location, receiving approximately 4161mm of precipitation annually, which averages out to around 347mm per month. The wettest month is March, averaging 499mm of rainfall. February and January also tend to see above-average precipitation. The driest month is June, with just 185mm. That's 314mm less than March, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall.

Wind

0km/h 5km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 2km/h Feb Wind Speed: 2km/h Mar Wind Speed: 1km/h Apr Wind Speed: 1km/h May Wind Speed: 1km/h Jun Wind Speed: 1km/h Jul Wind Speed: 1km/h Aug Wind Speed: 1km/h Sep Wind Speed: 1km/h Oct Wind Speed: 1km/h Nov Wind Speed: 1km/h Dec Wind Speed: 1km/h
Wind Speed

Open Bay is relatively calm, with an average annual wind speed of 1km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 1km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans.

Seasons

Winter
Dec 21
Spring
Sep 23
Summer
Dec 21
Autumn
Mar 20

92 days until Spring

It is currently winter in Open Bay, which began on June 21, 2026. Open Bay sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in May at around 28°C, while the coldest stretch bottoms out in March near 24°C. Spring is next, beginning on September 23, 2026 — 92 days from now.

Spring

Temperatures range from 24 to 28°C. Rainfall is heavy, totalling around 821mm across the season with a monthly average of 274mm. Winds are generally light, averaging 1km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 24 to 27°C. Rainfall is heavy, totalling around 1388mm across the season with a monthly average of 463mm. Winds are generally light, averaging 2km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.

Autumn

Temperatures range from 24 to 28°C. Rainfall is heavy, totalling around 1187mm across the season with a monthly average of 396mm. Winds are generally light, averaging 1km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from 24 to 27°C. Rainfall is heavy, totalling around 764mm across the season with a monthly average of 255mm. Winds are generally light, averaging 1km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.

Monthly Climate Data

The table below shows monthly climate averages for Open Bay based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
24 °C
27 °C
2 km/h
476 mm
0 cm
Feb
24 °C
27 °C
2 km/h
494 mm
0 cm
Mar
24 °C
27 °C
1 km/h
499 mm
0 cm
Apr
24 °C
27 °C
1 km/h
408 mm
0 cm
May
24 °C
28 °C
1 km/h
280 mm
0 cm
Jun Current
24 °C
27 °C
1 km/h
185 mm
0 cm
Jul
24 °C
27 °C
1 km/h
276 mm
0 cm
Aug
24 °C
27 °C
1 km/h
304 mm
0 cm
Sep
24 °C
28 °C
1 km/h
230 mm
0 cm
Oct
24 °C
28 °C
1 km/h
280 mm
0 cm
Nov
24 °C
28 °C
1 km/h
312 mm
0 cm
Dec
24 °C
27 °C
1 km/h
419 mm
0 cm
Airpult

Get accurate weather forecasts worldwide with real-time updates and severe weather alerts. Covering 6M+ locations with precise, reliable weather data.

© 2026 Samuenti GmbH. All rights reserved.

gb English
Metric (°C, km/h)

Confirm