Kwajalein Weather in December
December in Kwajalein typically sees daytime highs of 29°C (84°F) and nighttime lows of 26°C (79°F). December falls within the rainy season, so heavy rainfall is to be expected.
Rainfall in Kwajalein in December
Kwajalein is in the rainy season in December, with rain on around 21 days and an average of 182 mm (7.2 in). Rainy season showers tend to be fairly substantial. A good rain jacket or umbrella is worth having with you most days.
Temperature in Kwajalein in December
If you're visiting Kwajalein in December, expect highs of 29°C (84°F) and overnight lows around 26°C (79°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. At 26°C (79°F) overnight, the heat doesn't let up much after dark. If you're staying somewhere without air conditioning, a cold shower before bed and keeping the air moving can help.
Wind Speed in Kwajalein in December
December sees wind speeds averaging 6 m/s (12 knots). You'll experience strong winds that cause whole trees to sway and require effort when walking against them. As an average, expect variation from moderate breezes to particularly windy days that affect daily routines.
Average water temperature in December
The water temperature is 28°C (82°F), which most people find very comfortable. A good month for swimming and water sports.If your ideal day consists of dry skies and pleasant temperatures, January, February, March and April typically offer the best circumstances for Kwajalein.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Marshall Islands, check out our Kwajalein's climate page.
Kwajalein Temperature in December
Min Temperature
26°C (79°F)
Max Temperature
29°C (84°F)
Water Temperature
28°C (82°F)
Chance of Rain
70%
Precipitation
182 mm (7.2 in)
Rainy days
21 days
Humidity
79%
Windspeed
6 m/s (12 knots)
Daily Historical Temperatures
46-year average (1976-2025)
Based on our historical records, temperatures in Kwajalein typically stay consistent throughout December, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in December
Daily Historical Precipitation
46-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Kwajalein in December
Browse day-by-day weather records for Kwajalein spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Kwajalein historical weather extremes in December
The extremes listed below come from historical weather data collected in Kwajalein from 2006 through 2025.
- On December 5, 2015, temperatures climbed to 32°C (90°F), marking the warmest December day on record.
- The coldest December day was on December 25, 2009, with a maximum of 27°C (81°F).
- Nighttime temperatures dropped to 24°C (75°F) on December 22, 2025, marking the coldest December night on record.
- The heaviest December precipitation occurred on December 19, 2012, when 113 mm (4.4 in) of precipitation fell.
Best Places in Marshall Islands in December
Find out more about the weather in Marshall Islands and which places have the best travel conditions in this month. See all of Marshall Islands in December →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Kwajalein in December
Warm temperatures in December make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! With water temperatures around 28°C (82°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes.What To Do in Kwajalein in December
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 Marshall Islands, check out our Kwajalein's climate page.
Temperature Rainfall Humidity Wind Speed Water Temp
See the full Kwajalein climate overview or explore weather in Marshall Islands.
