Koloa Weather in December
In Koloa, December brings high daytime temperatures around 25°C (77°F), with nights cooling to 22°C (72°F). It is the wettest month of the year, so expect more rainfall than usual.
Rainfall in Koloa in December
This is the wettest month of the year, so having an umbrella ready is a smart choice. Past climate data indicates that roughly 16 days will see rain, totalling around 83 mm (3.3 in) for the month. Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.
Temperature in Koloa in December
December is a perfect month in Koloa, with 25°C (77°F) during the day and 22°C (72°F) at night. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. Nights remain mild at 22°C (72°F), making evenings a pleasant time to be outdoors.
Sunshine in Koloa in December
The area enjoys a moderate level of sunlight, with around 161 hours. It's a good balance between sunny and cloudy days.
Wind Speed in Koloa in December
Wind speeds average 4 m/s (8 knots) during December. At this speed, expect moderate winds that can raise dust and move small branches. Since this is an average, some days have gentle light winds while others experience stronger breezes that are quite noticeable.
Average water temperature in December
At 25°C (77°F), the water is warm and comfortable for swimming. Most people find this temperature ideal for spending longer periods in the water.To explore more travel options, our weather planner can help you discover destinations worldwide.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Koloa's climate page.
Koloa Temperature in December
Min Temperature
22°C (72°F)
Max Temperature
25°C (77°F)
Water Temperature
25°C (77°F) *
Chance of Rain
54%
Precipitation
83 mm (3.3 in)
Rainy days
16 days
Humidity
77% *
Windspeed
4 m/s (8 knots) *
Sunshine
161 hours *
Percentage Sunshine
49% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Koloa typically stay consistent throughout December, with daily highs averaging around 25°C (77°F). Nights are warm, with lows around 20°C (68°F).
Average temperatures in December
Daily Historical Precipitation
50-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 Koloa in December
Browse day-by-day weather records for Koloa spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Koloa historical weather extremes in December
Our historical data for Koloa spans 1976 to 2025, revealing these weather extremes.
- On December 22, 2010, temperatures climbed to 35°C (95°F), marking the warmest December day on record.
- The coldest December day was on December 20, 2017, with a maximum of 20°C (68°F).
- Nighttime temperatures dropped to 13°C (55°F) on December 23, 1983, marking the coldest December night on record.
Best Places in the United States of America in December
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in December →
perfect weather
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unpleasant
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What to Wear in Koloa in December
Warm but pleasant conditions in Koloa in December. 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. Expect heavy rainfall, so bring good rain protection and waterproof bags. With water temperatures around 25°C (77°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Koloa 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 the United States of America, check out our Koloa's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Koloa climate overview or explore weather in the United States of America.
