Jamestown Weather in December
Jamestown in December sees high daytime temperatures of 23°C (73°F) and nighttime lows of 21°C (70°F). With just 9.7 mm (0.4 in) of rainfall expected, it's a dry month overall.
Rainfall in Jamestown in December
You can expect rain on around 6 days based on historical patterns, with 9.7 mm (0.4 in) average for the month. Rain days are few and the total is low, so this is a largely dry month. Any showers that do occur tend to be brief.
Temperature in Jamestown in December
December tends to be one of the perfect months in Jamestown , with 23°C (73°F) in the afternoon and 21°C (70°F) overnight. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With lows of 21°C (70°F), the nights are warm and generally comfortable.Our weather planner can help you explore other travel destinations worldwide.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Saint Helena, check out our Jamestown 's climate page.
Jamestown Temperature in December
Min Temperature
21°C (70°F)
Max Temperature
23°C (73°F)
Chance of Rain
19%
Precipitation
9.7 mm (0.4 in)
Rainy days
6 days
Humidity
65%
Daily Historical Temperatures
49-year average (1977-2025)
Based on our historical records, temperatures in Jamestown typically stay consistent throughout December, with daily highs averaging around 23°C (73°F). Nights are pleasant, with lows around 17°C (63°F).
Average temperatures in December
Daily Historical Precipitation
49-year average (1977-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Jamestown in December
Browse day-by-day weather records for Jamestown spanning 50 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Jamestown historical weather extremes in December
According to our 38 years of weather records for Jamestown , the following extremes were recorded between 1987 and 2025.
- On December 19, 1987, temperatures climbed to 26°C (79°F), marking the warmest December day on record.
- On December 5, 1998, Jamestown saw its coldest December day with temperatures maxing out at 16°C (61°F).
- Nighttime temperatures dropped to 13°C (55°F) on December 5, 2009, marking the coldest December night on record.
Best Places in Saint Helena in December
Find out more about the weather in Saint Helena and which places have the best travel conditions in this month. See all of Saint Helena in December →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Jamestown in December
Pleasant temperatures in December mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. With minimal rainfall expected, you can leave the rain gear at home.What To Do in Jamestown 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 Saint Helena, check out our Jamestown 's climate page.
See the full Jamestown climate overview or explore weather in Saint Helena.
