St Mary Weather in December
St Mary in December averages 28°C (82°F) during the day and 23°C (73°F) at night. Keep in mind that quite a bit of rainfall is expected this month.
Rainfall in St Mary in December
Based on our climate data of the past 30 years, about 8 days of rain are anticipated, with 89 mm (3.5 in) on average. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in St Mary in December
December is a good time to be in St Mary. Days are perfect, reaching 28°C (82°F), with nights around 23°C (73°F). Overall, the month follows a fairly predictable daily temperature pattern. Nights are mild at around 23°C (73°F), which is comfortable for most people.
Sunshine in St Mary in December
With approximately 239 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.Our weather planner can help you find worldwide destinations with pleasant weather during this period. January, February, March, April and December typically offer the best weather for St Mary.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Jamaica, check out our St Mary's climate page.
St Mary Temperature in December
Min Temperature
23°C (73°F)
Max Temperature
28°C (82°F)
Chance of Rain
26%
Precipitation
89 mm (3.5 in)
Rainy days
8 days
Humidity
74% *
Sunshine
239 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in St Mary typically stay consistent throughout December, with daily highs averaging around 28°C (82°F). Nights are warm, with lows around 25°C (77°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 St Mary in December
Browse day-by-day weather records for St Mary spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
St Mary historical weather extremes in December
Based on weather observations in St Mary between 2003 and 2025, these are the recorded extremes during December.
- St Mary recorded its highest December temperature of 34°C (93°F) on December 29, 2006.
- The coldest December day was on December 14, 2010, with a maximum of 23°C (73°F).
- The lowest overnight temperature recorded in December was 19°C (66°F) (December 15, 2010).
Best Places in Jamaica in December
Find out more about the weather in Jamaica and which places have the best travel conditions in this month. See all of Jamaica in December →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in St Mary in December
Warm weather calls for comfortable, breathable clothing in December. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in St Mary 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 Jamaica, check out our St Mary's climate page.
Temperature Rainfall Sunshine Humidity
See the full St Mary climate overview or explore weather in Jamaica.
