Cool
Average highs are around 16°C, so pack for cooler days.
September verdict
Poor for holiday weather
Average highs are around 16°C, so pack for cooler days. Sunshine averages 5.2h per day, enough for a balanced month. Rainfall averages 77mm, which is relatively low for holiday planning.

Monthly averages
Temp
16°C
Rain
77mm
Sun
5.2h
Sea
16°C
Weather score
28
Poor
Cool
Average highs are around 16°C, so pack for cooler days.
Drier
Rainfall averages 77mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 5.2h per day, enough for a balanced month.
Cool sea
Sea temperatures average 16°C, so the water can feel cool.
Map
Compare Latvia with nearby places by weather score, rain, sun, temperature, and swim conditions.
September16°C average high
September sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsMay to September
This stretch sets the upper range for average daytime heat.
September77mm average rain
September is one of Latvia's wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to June
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
September5.2 hours average sun
September sits close to Latvia's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
September16°C average sea
September sits in the warmer sea-temperature season, usually making swimming easier to enjoy.
Warmest seaJuly to September
Sea temperatures are usually near 18°C in this stretch, so swimming comfort is at its strongest.
September28 weather score
September sits close to Latvia's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.