Warm
Average highs sit around 30°C, giving warm days by monthly-average standards.
September verdict
Saint Martins Island, Bangladesh in September
Weather score45Mixed
Mixed for holiday weather
Average highs sit around 30°C, giving warm days by monthly-average standards. Sunshine averages 4h per day, so this is not one of the brighter months. Rainfall averages 427mm, so showers are a real planning factor.
September weather
Monthly averages
Temp
30°C
Rain
427mm
Sun
4h
Sea
29°C
Weather score
45
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 427mm, so showers are a real planning factor.
Limited sun
Sunshine averages 4h per day, so this is not one of the brighter months.
Warm sea
Sea temperatures average 29°C, so swimming is usually comfortable by monthly-average standards.
Map
Weather map
Compare Saint Martins Island, Bangladesh with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September30°C average high
September is close to Saint Martins Island's yearly temperature average, giving a typical read on daytime heat.
Warmest monthsApril to May
This stretch sets the upper range for average daytime heat.
Rain
September427mm average rain
September sits near Saint Martins Island's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to May and October to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September4 hours average sun
September is below Saint Martins Island's yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsJanuary to April and November to December
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
September29°C average sea
September sits in the warmer sea-temperature season, usually making swimming easier to enjoy.
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.
Weather score
September45 weather score
September is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsJanuary to March and November to December
These months have the strongest weather score in the monthly averages.