December weather forecast and climate
Honiara, Solomon Islands

A tropical white sand beach in Honiara, in the glorious Solomon Islands, with palm trees and shrubs along the edge
A tropical white sand beach in Honiara, in the glorious Solomon Islands, with palm trees and shrubs along the edge
The first month of the summer, December, is also a moderately hot month in Honiara, Solomon Islands, with average temperature varying between 24°C (75.2°F) and 29.3°C (84.7°F).

Temperature

The warmest month is December, with an average high-temperature of 29.3°C (84.7°F) and an average low-temperature of 24°C (75.2°F).

Heat index

The average heat index in December is calculated to a torrid 36.6°C (97.9°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'feels like', 'felt air temperature', or 'real feel', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like clothing, wind, differences in body mass, height, and shape, and activity influence one's weather impression. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

The average relative humidity in December is 84%.

Rainfall

Months with the most rainfall are March and December, with an average 299mm (11.77") of precipitation.

Sea temperature

In Honiara, Solomon Islands, in December, the average water temperature is 30.2°C (86.4°F).
Note: For swimming, other intense water activities, temperature above 30°C (86°F) is arguably unpleasant, as the water cooling effect is missing.

Daylight

December has the longest days of the year in Honiara, with an average of 12.7h of daylight.

Sunshine

In Honiara, the average sunshine in December is 8.9h.

UV index

January through March, June, August, October through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 6 interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the warmest month in Honiara?

The warmest month is December, with an average high-temperature of 29.3°C (84.7°F) and an average low-temperature of 24°C (75.2°F).

What is the temperature in December in Honiara?

In Honiara, in December, the average high-temperature is 29.3°C (84.7°F), and the average low-temperature is 24°C (75.2°F). In December, the average heat index (a.k.a. 'felt air temperature', 'real feel'), that combines relative humidity and air temperature, is calculated to 36.6°C (97.9°F).

What is the average humidity in December in Honiara?

In Honiara, the average relative humidity in December is 84%.

How many days does it rain in December in Honiara?

In Honiara, in December, during 29.3 rainfall days, 299mm (11.77") of precipitation is typically accumulated.

What is the rainiest month in Honiara?

The wettest months in Honiara are March and December, with an average 299mm (11.77") of rainfall.

What is the sea water temperature in December in Honiara?

In December, the average sea temperature is 30.2°C (86.4°F). The water temperature above 30°C (86°F) is arguably regarded as unpleasant. The primary purpose of entering the water - cooling down from sunshine and high temperatures - is lost.

When are the longest days in Honiara?

The month with the longest days in Honiara is December, with an average of 12.7h of daylight.

How many hours of daylight does Honiara have in December?

The average length of the day in December in Honiara is 12.7h.

How many hours of sunshine does Honiara have in December?

In Honiara, the average sunshine in December is 8.9h.

What is the month with the lowest UV index in Honiara?

Months with the lowest UV index are January through March, June, August, October through December, with an average maximum UV index of 6.

What is the UV index reading in December in Honiara?

The average daily maximum UV index in December is 6. A UV Index of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV radiation.
Average temperature in December - Honiara, Solomon Islands
  • Average high temperature in December: 29.3°C

The warmest month (with the highest average high temperature) is December (29.3°C).
The month with the lowest average high temperature is July (27.8°C).

  • Average low temperature in December: 24°C

The month with the highest average low temperature is January (24.2°C).
The coldest months (with the lowest average low temperature) are August and September (23.4°C).

Average pressure in December - Honiara, Solomon Islands
  • Average pressure in December: 1007.2mbar

The month with the highest atmospheric pressure is August (1010.5mbar).
The month with the lowest atmospheric pressure is January (1006.9mbar).

Average wind speed in December - Honiara, Solomon Islands
  • Average wind speed in December: 6km/h

The windiest month (with the highest average wind speed) is July (11.3km/h).
The calmest month (with the lowest average wind speed) is December (6km/h).

Average humidity in December - Honiara, Solomon Islands
  • Average humidity in December: 84%

Months with the highest relative humidity are January, March and April (85%).
Months with the lowest relative humidity are August, September, October and November (83%).

Average rainfall in December - Honiara, Solomon Islands
  • Average rainfall in December: 299mm

The wettest months (with the highest rainfall) are March and December (299mm).
The driest month (with the least rainfall) is June (125mm).

Average rainfall days in December - Honiara, Solomon Islands
  • Average rainfall days in December: 29.3 days

Months with the highest number of rainy days are January, March and December (29.3 days).
The month with the least rainy days is August (24.3 days).

Average sea temperature in December - Honiara, Solomon Islands
  • Average sea temperature in December: 30.2°C

The best month for swimming (with the highest average sea temperature) is April (30.3°C).
The coldest month (with the lowest average sea temperature) is August (28.6°C).

Average daylight in December / Average sunshine in December - Honiara, Solomon Islands
  • Average daylight in December: 12.7h

The month with the longest days is December (Average daylight: 12.7h).
Months with the shortest days are June and July (Average daylight: 11.6h).

  • Average sunshine in December: 8.9h

The month with the most sunshine is November (Average sunshine: 9.7h).
The month with the least sunshine is January (Average sunshine: 6.8h).

Average sunshine days in December - Honiara, Solomon Islands
  • Average sunshine days in December: 1.2 days

The month with the most sunshine days is August (4 days).
The month with the least sunshine days is January (0.3 days).

Average UV index in December - Honiara, Solomon Islands
  • Average UV index in December: 6

Months with the highest UV index are April, May, July and September (UV index 7).
Months with the lowest UV index are January, February, March, June, August, October, November and December (UV index 6).

Average cloud cover in December - Honiara, Solomon Islands
  • Average cloud cover in December: 46

The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is May (Cloud cover 41).

Average visibility in December - Honiara, Solomon Islands
  • Average visibility in December: 9km

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).