Warm
Average highs sit around 28°C, giving warm days by monthly-average standards.
December verdict
Excellent for holiday weather
Average highs sit around 28°C, giving warm days by monthly-average standards. Sunshine averages 8.3h per day, so bright days are a strong part of the month. Rainfall averages 19mm, which is relatively low for holiday planning.
Monthly averages
Temp
28°C
Rain
19mm
Sun
8.3h
Sea
27°C
Weather score
85
Excellent
Warm
Average highs sit around 28°C, giving warm days by monthly-average standards.
Drier
Rainfall averages 19mm, which is relatively low for holiday planning.
Bright
Sunshine averages 8.3h per day, so bright days are a strong part of the month.
Swimmable
Sea temperatures average 27°C, which can work for swimming but may feel fresh.
Map
Compare Saint Martins Island, Bangladesh with nearby places by weather score, rain, sun, temperature, and swim conditions.
December28°C average high
December is cooler than the yearly average, which can make sightseeing feel gentler than in hotter months.
Warmest monthsApril to May
This stretch sets the upper range for average daytime heat.
December19mm average rain
December is one of Saint Martins Island's driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsJanuary to May and October to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
December8.3 hours average sun
December is one of Saint Martins Island's sunniest months, with some of the strongest bright-day conditions in the yearly averages.
Brightest monthsJanuary to April and November to December
This stretch has the strongest sunshine in the monthly averages.
December27°C average sea
December is close to Saint Martins Island's yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaApril to July and September to November
Sea temperatures are usually near 29°C in this stretch, so swimming comfort is at its strongest.
December85 weather score
December is one of Saint Martins Island's best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsJanuary to March and November to December
These months have the strongest weather score in the monthly averages.