United States Minor Outlying IslandsAverage weather for Johnston Atoll in December
It's warm in December in Johnston Atoll with an average temperature of 27°C. Temperatures this month range from a low of 26°C to a high of 27°C. At night, you can expect temperatures between 25°C and 26°C.
Start of December
The month of December starts in Johnston Atoll with hot temps, averaging around 27°C during the day and nights around 26°C. A few showers might pop up early in the month, but overall, it’ll stay mostly sunny and dry. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
Mid December
By mid-December, daytime temps stay steady at around 27°C, with nights around 26°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
End of December
By the end of December, the average daytime temperature in Johnston Atoll is around 27°C, while nighttime temps are about 26°C. A shower might pop up, but overall, the weather will be dry and sunny. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
In December, there is an average of 108 mm of precipitation, spread over 16 days. The wind speed is around 5 Bft, mostly coming from the East.
Johnston Atoll in December |
New York | ||
|---|---|---|---|
 Average temperature |
27°C | 9°C | |
 Max. temperature |
27°C | 12°C | |
| Min. temperature |
26°C | -5°C | |
 Total precipitation |
108 mm | 133 mm | |
| Rainy days |
16 days | 17 days | |
November
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is December a good time to visit Johnston Atoll?
Looking for sun? December isn’t a good month to be in Johnston Atoll. The temperature is nice, but there’s too much chance of rain.
Temperature records
With 28°C in 2014, Johnston Atoll reached the highest temperature in December over the past 10 years. The lowest daytime temperature in this month was 23°C in 2021. The extreme nighttime temperatures ranged from a lowest recorded value of 19°C to a highest value of 27°C.
Check out the climate of Johnston Atoll for all months and discover the best travel time
Daily Temperature in December in Johnston Atoll
This chart shows the average daily high and low temperatures in December for Johnston Atoll, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in December in Johnston Atoll
The chart below shows the average daily precipitation in December for Johnston Atoll, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for December, you can expect about 16 days of precipitation in Johnston Atoll.
Daily UV index in December in Johnston Atoll
This chart shows the average daily UV index in December in Johnston Atoll, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in December in Johnston Atoll over the years
This chart shows the average temperature in December in Johnston Atoll, measured in degrees Celsius, over the past few years.
Total precipitation in December in Johnston Atoll over the years
This chart shows the average precipitation in December in Johnston Atoll, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in December for Johnston Atoll
Click on any day in December to get detailed info about the usual weather on that day in Johnston Atoll. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in December in Johnston Atoll
Have you been to Johnston Atoll in December?
Share your weather experience in December in Johnston Atoll.
Average weather in Johnston Atoll by month
Click on a month below to see detailed weather info for Johnston Atoll. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Johnston Atoll for all months at once
