The climate of New Guinea is quite diverse, because most of the island is mountains with towns and villages at 2000-2500-meter height. And the air here is pretty cool. The temperature difference with the coast can be 15 degrees.

If you are going to large mountains, for example, to the peak of Kaiser Wilhelm, then there, on top, can be about 0 C at any time of the year. The climate in these mountains can be called soft. However, on the coast is a real tropical climate.

Generally speaking, on the coast in the daytime always +30-33 °C (91-95 °F), and at night +25-28 °C (77-82 °F). And here it's always very humid. The temperature differences between night and day, between winter and summer - are not large. In the mountains in the daytime +20-25 °C (68-77 °F), and at night +15-20 °C (59-68 °F). At night in the rain in the mountains it is quite uncomfortable, unless you, of course, hid under the roof, and it's especially cold to ride in some truck at night in the rain!

Seasons

Contents:

• Spring
• Summer
• Autumn
• Winter

Spring in Papua New Guinea

Spring on the island lasts from September to November. At this time there are strong tropical showers, the air temperature remains quite high. The average daytime temperatures are +24-30 °C (75-86 °F). Strong winds are still blowing on the coast. Spring here is not very comfortable - high humidity and heat create unpleasant climatic conditions. Rains in this season are almost every day, sometimes a downpour can’t stop the whole day. The most unstable weather is in November.

Climate of the Spring Months

September Max average t°: +30 °C (86 °F) Min average t°: +22 °C (72 °F) Sundial in the day: 7 hours Rainy days: 5 days Precipitation: 31 mm (1.2")

October Max average t°: +31 °C (88 °F) Min average t°: +23 °C (73 °F) Sundial in the day: 8 hours Rainy days: 5 days Precipitation: 26 mm (1.0")

November Max average t°: +32 °C (90 °F) Min average t°: +23 °C (73 °F) Sundial in the day: 8 hours Rainy days: 6 days Precipitation: 47 mm (1.9")

(Port Moresby)

Spring Holidays

• 16 September - Independence Day (Constitution Day).

Summer in Papua New Guinea

The summer period lasts from December to March. Air in coastal areas at this time warms up to +30-32 °C (86-90 °F) in the daytime, often temperatures rise to +40 °C (104 °F) and more. In the mountains it is still relatively cool. Rains become rare: summer is a dry season. However, if a downpour starts, then it can be damn strong.

Climate of the Summer Months

December Max average t°: +32.5 °C (91 °F) Min average t°: +23.5 °C (74 °F) Sundial in the day: 7 hours Rainy days: 12 days Precipitation: 124 mm (4.9")

January Max average t°: +32 °C (90 °F) Min average t°: +23 °C (74 °F) Sundial in the day: 6 hours Rainy days: 18 days Precipitation: 168 mm (6.6")

February Max average t°: +32 °C (89 °F) Min average t°: +23 °C (74 °F) Sundial in the day: 5 hours Rainy days: 16 days Precipitation: 177 mm (7.0")

(Port Moresby)

Summer Holidays

• 25-26 December - Christmas.
• 26 December - Boxing Day.
• 1 January - New Year.

Autumn in Papua New Guinea

Autumn on this island comes in late March and lasts until June. The weather at this time is really unstable - if the sun shone in the morning, then for lunch can begin a heavy downpour with a hurricane wind. The most unfavorable month in the autumn period is April. The average air temperature in the daytime is +27 °C (81 °F), which in combination with catastrophic humidity provides stuffiness and extremely unpleasant conditions for staying on the island.

Climate of the Autumn Months

March Max average t°: +31.5 °C (89 °F) Min average t°: +23.5 °C (74 °F) Sundial in the day: 6 hours Rainy days: 18 days Precipitation: 195 mm (7.7")

April Max average t°: +31 °C (88 °F) Min average t°: +23 °C (73 °F) Sundial in the day: 6.5 hours Rainy days: 11 days Precipitation: 93 mm (3.7")

May Max average t°: +30.5 °C (87 °F) Min average t°: +23 °C (73 °F) Sundial in the day: 7 hours Rainy days: 9 days Precipitation: 56 mm (2.2")

(Port Moresby)

Autumn Holidays

• Good Friday, Easter and Easter Monday (the date changes every year).

• In addition, various regional festivals taking place during the year can also be considered days off.

Winter in Papua New Guinea

In the winter months (June-September) in Papua New Guinea, this heat remains. Sometimes daytime temperatures reach +40 °C (104 °F). The average temperature of the winter season is +24-28 °C (75-82 °F). In general, the winter in the island is quite pleasant - comfortable temperature, rains are rare. On the sea at this time blowing the wind, so in winter there are excellent conditions for windsurfing.

Climate of the Winter Months

June Max average t°: +30 °C (85 °F) Min average t°: +22 °C (72 °F) Sundial in the day: 6.5 hours Rainy days: 6 days Precipitation: 46 mm (1.8")

July Max average t°: +29 °C (84 °F) Min average t°: +22 °C (72 °F) Sundial in the day: 7 hours Rainy days: 4 days Precipitation: 23 mm (0.9")

August Max average t°: +29 °C (84 °F) Min average t°: +22 °C (72 °F) Sundial in the day: 7.5 hours Rainy days: 4 days Precipitation: 31 mm (1.2")

(Port Moresby)

Winter Holidays

• 21 July - Memorial Day