St Mary in May sees high daytime temperatures of 30°C (86°F) and nighttime lows of 24°C (75°F). Rainfall is fairly high this month at around 129 mm (5.1 in), so pack a rain jacket to stay dry.
If you're looking for dry conditions and comfortable temperatures, May may not be the ideal month to visit St Mary. Our weather planner can help you explore destinations with more pleasant weather conditions.
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Pick a month to see the average temperature, rainfall and sunshine in St Mary - and find the best time to visit.
49-year average (1976-2025)
Based on our historical records, temperatures in St Mary typically stay consistent throughout May, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 26°C (79°F).
49-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
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.
The extremes listed below come from historical weather data collected in St Mary from 1997 through 2026.
Find out more about the weather in Jamaica and which places have the best travel conditions in this month. See all of Jamaica in May →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Warm temperatures in May 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. Prepare for significant rainfall with proper waterproof clothing and shoes. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity
See the full St Mary climate overview or explore weather in Jamaica.
Where to go in May - average daytime high across popular destinations.
Montego Bay
31°C (88°F) Falmouth30°C (86°F) Runaway Bay30°C (86°F) Treasure Beach
30°C (86°F) Ocho Rios
30°C (86°F) Kingston29°C (84°F) Negril30°C (86°F) Port Antonio28°C (82°F) Need travel inspiration? Check out our bucket list articles and be inspired.
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