What is the weather like in Riga in September?

Expect temperatures between 11°C and 17°C with 25% average rain probability and about 8 hours of sunshine daily.

What is the weather like in Riga in September?

Riga in September scores 66/100 based on 30 years of climate data. Great time to visit - recommended.

Who should visit Riga in September?

September in Riga is ideal for: Cultural tourists, Business travelers.

Riga Weather in September | 30-Year Forecast

Avg High

17°C

Hottest around day 6

Avg Low

11°C

Coolest around day 30

Rainy Days

14days

25% avg rain chance

Sunshine

8hrs/day

Autumn season

Sea Temperature in September

Gulf of Riga(Rīgas līcis)

18.6°C

Monthly Average

Water Feel

🏊Pleasant

Comfortable for most swimmers

Swim Rating

👍Good for swimming

Based on average sea surface temperature

Body of Water

Gulf of Riga

Rīgas līcis

Riga coastline

Essential Travel Info for Riga

🗓️ Best Time to Visit 📖 Travel Guide 🍴 Food Guide

Currency

EUR

€ Euro

Language

Latvian

Driving

Right side

Safety

High Safety

GPI: 1.673

Travel Intelligence

Exclusive flight analytics & health data for Riga

Smart Flight Estimator

Airport-to-Airport Logistics

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Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Moderate

52/ 100

Traffic Index

Balanced traffic

Peak Daily Arrivals

slots per day

Peak

Dec

Low

Jan

Monthly Traffic Distribution

Jan

Feb

Mar

Apr

May

145

Jun

147

Jul

147

Aug

153

Sep

132

Oct

154

Nov

217

Dec

Traffic Level

Low Season

Key Connections

Helsinki Vantaa (HEL)

Tallinn Lennart Meri (TLL)

Vilnius (VNO)

Stockholm -Arlanda (ARN)

Amsterdam Schiphol (AMS)

Health & Safety Advisory

CDC travel health recommendations

7 Recommendations

COVID-19

All eligible travelers should be up to date with their COVID-19 vaccines. Please seeYour COVID-19 Vaccinationfor more information.

Hepatitis A

Recommended for unvaccinated travelers one year old or older going to Latvia.Infants 6 to 11 months old should also be vaccinated against Hepatitis A. The dose does not count toward the routine 2-dose series.Travelers allergic to a vaccine component should receive a single dose of immune globulin, which provides effective protection for up to 2 months depending on dosage given.Unvaccinated travelers who are over 40 years old, are immunocompromised, or have chronic medical conditions planning to depart to a risk area in less than 2 weeks should get the initial dose of vaccine and at the same appointment receive immune globulin.

Hepatitis B

Recommended for unvaccinated travelers of all ages traveling to Latvia.

Measles

Cases of measles are on the rise worldwide. Travelers are at risk of measles if they have not been fully vaccinated at least two weeks prior to departure, or have not had measles in the past, and travel internationally to areas where measles is spreading.All international travelers should be fully vaccinated against measles with the measles-mumps-rubella (MMR) vaccine, including an early dose for infants 6–11 months, according toCDC’s measles vaccination recommendations for international travel.

Rabies

Dogs infected with rabies are not commonly found in Latvia.If rabies exposures occur while in Latvia, rabies vaccines may only be available in larger suburban/urban medical facilities.Rabies pre-exposure vaccination considerations include whether travelers 1) will be performing occupational or recreational activities that increase risk for exposure to potentially rabid animals and 2) might have difficulty getting prompt access to safe post-exposure prophylaxis.Please consult with a healthcare provider to determine whether you should receive pre-exposure vaccination before travel.For more information, seecountry rabies status assessments.

Tick-borne Encephalitis

For travelers moving or traveling toTBE-endemic areasTBE vaccineis recommended for persons who will haveextensiveexposure to ticks based on their planned outdoor activities and itinerary.TBE vaccine may be considered for persons who might engage in outdoor activities in areas ticks are likely to be found.

+1 more

Source: CDC Travelers' Health

View Complete Health Guide

Is September a Good Time to Visit Riga?

👍Great time to visit - recommended(66/100)

Short Answer

Riga shines in September with 17°C pleasant temperatures and minimal 25% rain chance. Expect 8.6 hours of sunshine daily - pack light layers for evenings.

Decision Factors

Vaccinations required

Yellow Fever

Health precautions needed

Be aware of: Leptospirosis, Hantavirus, Parvovirus B19

Plenty of sunshine

8.6h of sunshine daily

Calm, family-friendly seas

0m wave height - Lake-like

Shoulder season - balanced conditions

71% of peak - good value with moderate crowds

Exceptional dining scene

28 Michelin-listed restaurants

Good For

🏛️
Cultural tourists
Comfortable conditions for exploring museums and sites
💼
Business travelers
Climate-controlled meetings unaffected by weather

Who Should Avoid

👴
Elderly travelers
78% humidity creates difficult conditions

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Riga in September averages 17°C with 25% precipitation probability."

📊 Source: 30YearWeather.com🛰️ Data: NASA POWER (1991-2021)View Methodology →

Frequently Asked Questions: Riga in September

What are the temperatures in Riga in September?

Daytime highs average 17°C, nights drop to 11°C. Temperatures remain fairly consistent.

How many rainy days in Riga in September?

Expect around 14 days with measurable rainfall. Rain is unlikely to disrupt plans.

What to wear in Riga in September?

Layers are key. A medium-weight jacket and closed-toe shoes.

Is September peak season in Riga?

This is shoulder season—moderate prices and manageable crowds.

Riga Weather in September