Cool
Average highs are around 16°C, so pack for cooler days.
September verdict
Riga, Latvia in September
Weather score28Poor
Poor for holiday weather
Average highs are around 16°C, so pack for cooler days. Sunshine averages 5h per day, enough for a balanced month. Rainfall averages 73mm, which is relatively low for holiday planning.
September weather
Monthly averages
Temp
16°C
Rain
73mm
Sun
5h
Sea
16°C
Weather score
28
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 73mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 5h per day, enough for a balanced month.
Cool sea
Sea temperatures average 16°C, so the water can feel cool.
Map
Weather map
Compare Riga, Latvia with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
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.
Rain
September73mm average rain
September is one of Riga's wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to May and December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September5 hours average sun
September sits close to Riga'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.
Sea temperature
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.
Weather score
September28 weather score
September scores below Riga's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.
