Warm
Average highs sit around 31°C, giving warm days by monthly-average standards.
September verdict
Mixed for holiday weather
Average highs sit around 31°C, giving warm days by monthly-average standards. Sunshine averages 4.5h per day, so this is not one of the brighter months. Rainfall averages 468mm, so showers are a real planning factor.
Monthly averages
Temp
31°C
Rain
468mm
Sun
4.5h
Sea
29°C
Weather score
46
Mixed
Warm
Average highs sit around 31°C, giving warm days by monthly-average standards.
Wet
Rainfall averages 468mm, so showers are a real planning factor.
Limited sun
Sunshine averages 4.5h 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
Compare Chanthaburi, Thailand with nearby places by weather score, rain, sun, temperature, and swim conditions.
September31°C average high
September is on the cooler side of Chanthaburi's year, useful if you prefer less intense daytime heat.
Warmest monthsJanuary to May
This stretch sets the upper range for average daytime heat.
September468mm average rain
September is one of Chanthaburi's wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to April and November to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
September4.5 hours average sun
September is one of Chanthaburi's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsJanuary to April and November to December
This stretch has the strongest sunshine in the monthly averages.
September29°C average sea
September is close to Chanthaburi's yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaApril to June
Sea temperatures are usually near 30°C in this stretch, so swimming comfort is at its strongest.
September46 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 February and December
These months have the strongest weather score in the monthly averages.
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