Where to travel in September: weather by city

Compare daytime highs, nighttime lows, precipitation and daylight. Open a city guide to explore weather through the month and choose clothes for walking.

Contents

City weather in September

2015–2024 averages. Values refer to the listed cities.
City	Country or territory	Daytime high	Nighttime low	Precipitation	Days with at least 1 mm	Daylight
Singapore	Singapore	29.8 °C	25.5 °C	246.6 mm	24.0	12.1 h
New York City	United States	23.5 °C	18.4 °C	116.7 mm	10.3	12.5 h
London	United Kingdom	20.3 °C	10.6 °C	53.8 mm	11.3	12.7 h
Paris	France	22.1 °C	11.1 °C	57.2 mm	10.2	12.6 h
Berlin	Germany	22.1 °C	11.1 °C	36.5 mm	7.1	12.7 h
Chicago	United States	22.9 °C	17.4 °C	83.0 mm	10.2	12.5 h
Hong Kong	Hong Kong	30.4 °C	26.3 °C	202.7 mm	20.1	12.3 h
Sydney	Australia	19.9 °C	13.9 °C	34.8 mm	6.5	11.9 h
Washington	United States	27.3 °C	17.1 °C	102.7 mm	9.7	12.5 h
Amsterdam	The Netherlands	19.3 °C	13.0 °C	75.3 mm	12.7	12.7 h
Tokyo	Japan	27.9 °C	21.4 °C	250.9 mm	18.0	12.4 h
Istanbul	Turkey	26.2 °C	19.8 °C	43.3 mm	6.7	12.5 h
Vienna	Austria	21.8 °C	11.1 °C	85.2 mm	9.7	12.6 h
Bangkok	Thailand	30.8 °C	24.6 °C	302.8 mm	27.5	12.2 h
Budapest	Hungary	24.3 °C	12.3 °C	55.8 mm	7.4	12.6 h
San Francisco	United States	24.5 °C	13.6 °C	4.1 mm	0.6	12.5 h
Stockholm	Sweden	17.2 °C	9.9 °C	56.6 mm	10.0	12.9 h
Helsinki	Finland	15.4 °C	12.1 °C	63.7 mm	10.8	13.0 h
Madrid	Spain	27.1 °C	13.1 °C	40.8 mm	5.5	12.5 h
Delhi	India	33.8 °C	24.1 °C	138.4 mm	11.7	12.4 h
Munich	Germany	19.3 °C	9.8 °C	110.0 mm	13.6	12.6 h
Copenhagen	Denmark	18.2 °C	12.7 °C	55.4 mm	10.8	12.8 h
Mexico City	Mexico	20.7 °C	10.2 °C	143.7 mm	25.5	12.3 h
Dubai	United Arab Emirates	38.3 °C	30.6 °C	1.5 mm	0.2	12.3 h
Lisbon	Portugal	22.4 °C	17.8 °C	22.6 mm	4.2	12.5 h
Saint Petersburg	Russia	15.5 °C	9.0 °C	60.5 mm	12.6	12.9 h
Melbourne	Australia	16.0 °C	8.0 °C	57.2 mm	11.6	11.8 h
Barcelona	Spain	26.5 °C	17.6 °C	62.9 mm	10.4	12.5 h
Venice	Italy	25.0 °C	18.6 °C	84.8 mm	11.0	12.6 h
Oslo	Norway	14.9 °C	7.5 °C	119.6 mm	13.7	12.9 h
Cape Town	South Africa	16.2 °C	13.4 °C	51.2 mm	9.0	11.9 h
Dublin	Ireland	16.3 °C	11.1 °C	96.7 mm	14.5	12.7 h
Buenos Aires	Argentina	17.5 °C	12.2 °C	64.9 mm	5.2	11.9 h
Seattle	United States	20.5 °C	11.2 °C	58.1 mm	9.1	12.6 h
Vancouver	Canada	18.2 °C	13.0 °C	79.5 mm	11.9	12.7 h
Hamburg	Germany	19.8 °C	10.7 °C	58.5 mm	11.3	12.7 h
Rome	Italy	28.0 °C	17.5 °C	69.5 mm	8.9	12.5 h
Moscow	Russia	16.5 °C	7.6 °C	57.2 mm	10.7	12.8 h
Manchester	United Kingdom	17.1 °C	9.8 °C	85.9 mm	16.4	12.7 h
Jakarta	Indonesia	30.5 °C	25.3 °C	82.2 mm	13.6	12.1 h
Las Vegas	United States	36.0 °C	21.3 °C	7.8 mm	1.5	12.4 h
Milan	Italy	25.1 °C	15.1 °C	81.3 mm	10.6	12.6 h
Los Angeles	United States	29.8 °C	18.0 °C	5.5 mm	1.0	12.4 h
Ottawa	Canada	22.3 °C	10.7 °C	64.9 mm	10.3	12.6 h
Boston	United States	24.2 °C	13.7 °C	104.0 mm	10.0	12.5 h
Quebec City	Canada	18.5 °C	9.2 °C	98.0 mm	14.4	12.6 h
Ho Chi Minh City	Vietnam	30.1 °C	24.2 °C	199.6 mm	24.7	12.2 h
Lyon	France	23.0 °C	11.4 °C	67.9 mm	9.3	12.6 h
Hanoi	Vietnam	30.8 °C	24.2 °C	287.3 mm	21.6	12.3 h
Prague	Czechia	21.4 °C	10.0 °C	56.6 mm	9.2	12.7 h
Guangzhou	China	31.6 °C	24.4 °C	175.8 mm	17.3	12.3 h
Cologne	Germany	21.6 °C	10.9 °C	61.9 mm	11.0	12.7 h
Macau	Macao	29.6 °C	28.2 °C	282.0 mm	20.5	12.3 h
Beijing	China	26.6 °C	14.5 °C	74.8 mm	8.7	12.5 h
Glasgow	United Kingdom	15.0 °C	8.5 °C	106.6 mm	17.8	12.8 h
Montreal	Canada	23.1 °C	12.0 °C	70.0 mm	10.0	12.6 h
Nairobi	Kenya	28.9 °C	14.1 °C	15.4 mm	3.0	12.1 h
Toronto	Canada	22.6 °C	17.0 °C	52.7 mm	12.8	12.5 h
Kyoto	Japan	26.5 °C	19.3 °C	204.7 mm	17.3	12.4 h
Seoul	South Korea	25.5 °C	17.4 °C	135.5 mm	11.0	12.5 h
Brussels	Belgium	21.0 °C	11.1 °C	64.2 mm	12.0	12.7 h
Tallinn	Estonia	16.2 °C	11.3 °C	58.2 mm	10.5	12.9 h
Krakow	Poland	21.2 °C	10.5 °C	88.5 mm	11.8	12.7 h
Naples	Italy	27.4 °C	17.6 °C	68.7 mm	9.0	12.5 h
Addis Ababa	Ethiopia	20.7 °C	11.3 °C	181.0 mm	24.0	12.2 h
Shanghai	China	28.7 °C	22.4 °C	204.5 mm	13.4	12.4 h
Athens	Greece	29.1 °C	20.5 °C	35.1 mm	4.6	12.5 h
Rio de Janeiro	Brazil	26.7 °C	19.8 °C	72.2 mm	8.7	11.9 h
Zurich	Switzerland	19.5 °C	10.8 °C	109.8 mm	13.0	12.6 h
Geneva	Switzerland	20.6 °C	10.6 °C	89.4 mm	11.1	12.6 h
Kuala Lumpur	Malaysia	29.3 °C	22.9 °C	196.5 mm	24.5	12.1 h
Warsaw	Poland	21.3 °C	10.5 °C	59.7 mm	9.2	12.7 h
Hiroshima	Japan	26.2 °C	18.3 °C	209.9 mm	12.9	12.4 h
Canberra	Australia	16.2 °C	4.1 °C	32.3 mm	5.9	11.8 h
Chiang Mai	Thailand	27.6 °C	21.0 °C	242.1 mm	23.3	12.3 h
Mumbai	India	29.2 °C	24.2 °C	484.8 mm	25.8	12.3 h
Tel Aviv	Israel	33.4 °C	21.5 °C	2.7 mm	0.4	12.4 h
Ljubljana	Slovenia	20.7 °C	10.4 °C	154.1 mm	13.0	12.6 h
Dresden	Germany	20.8 °C	10.3 °C	54.5 mm	9.1	12.7 h
Frankfurt	Germany	22.8 °C	11.0 °C	49.0 mm	8.8	12.7 h
Gothenburg	Sweden	16.8 °C	12.6 °C	86.9 mm	13.8	12.9 h
Baku	Azerbaijan	24.8 °C	21.6 °C	21.2 mm	4.3	12.5 h
Perth	Australia	18.7 °C	13.6 °C	37.2 mm	7.9	11.9 h
Calgary	Canada	17.7 °C	5.1 °C	43.0 mm	8.5	12.7 h
Kyiv	Ukraine	22.2 °C	11.0 °C	38.8 mm	7.7	12.7 h
Bucharest	Romania	27.5 °C	14.3 °C	41.5 mm	6.1	12.6 h
Turku	Finland	16.3 °C	8.6 °C	57.0 mm	10.2	13.0 h
Florence	Italy	24.2 °C	13.0 °C	59.1 mm	9.8	12.6 h
Porto	Portugal	23.5 °C	15.8 °C	56.9 mm	7.0	12.5 h
Seville	Spain	32.5 °C	17.9 °C	13.1 mm	3.1	12.5 h
Bergen	Norway	13.8 °C	8.3 °C	243.4 mm	19.8	13.0 h
Abu Dhabi	United Arab Emirates	37.7 °C	31.2 °C	1.3 mm	0.1	12.3 h
Malaga	Spain	24.9 °C	20.9 °C	20.8 mm	4.0	12.4 h
Antalya	Turkey	32.8 °C	19.9 °C	22.1 mm	3.9	12.4 h
Hurghada	Egypt	33.7 °C	26.4 °C	0.1 mm	0.1	12.3 h
Funchal	Portugal	24.1 °C	21.5 °C	14.9 mm	3.3	12.4 h
Sharm El Sheikh	Egypt	37.4 °C	27.6 °C	0.1 mm	0.1	12.3 h
Larnaca	Cyprus	31.6 °C	25.6 °C	3.8 mm	0.7	12.4 h
Paphos	Cyprus	29.6 °C	22.6 °C	5.6 mm	1.4	12.4 h
Puerto de la Cruz	Spain	24.4 °C	21.7 °C	10.6 mm	1.8	12.4 h

Countries and territories

Singapore — 1 destinations
United States — 8 destinations
United Kingdom — 3 destinations
France — 2 destinations
Germany — 6 destinations
Hong Kong — 1 destinations
Australia — 4 destinations
The Netherlands — 1 destinations
Japan — 3 destinations
Turkey — 2 destinations
Austria — 1 destinations
Thailand — 2 destinations
Hungary — 1 destinations
Sweden — 2 destinations
Finland — 2 destinations
Spain — 5 destinations
India — 2 destinations
Denmark — 1 destinations
Mexico — 1 destinations
United Arab Emirates — 2 destinations
Portugal — 3 destinations
Russia — 2 destinations
Italy — 5 destinations
Norway — 2 destinations
South Africa — 1 destinations
Ireland — 1 destinations
Argentina — 1 destinations
Canada — 6 destinations
Indonesia — 1 destinations
Vietnam — 2 destinations
Czechia — 1 destinations
China — 3 destinations
Macao — 1 destinations
Kenya — 1 destinations
South Korea — 1 destinations
Belgium — 1 destinations
Estonia — 1 destinations
Poland — 2 destinations
Ethiopia — 1 destinations
Greece — 1 destinations
Brazil — 1 destinations
Switzerland — 2 destinations
Malaysia — 1 destinations
Israel — 1 destinations
Slovenia — 1 destinations
Azerbaijan — 1 destinations
Ukraine — 1 destinations
Romania — 1 destinations
Egypt — 2 destinations
Cyprus — 2 destinations

Cities with daytime temperatures closest to 21 °C

2015–2024 averages. Values refer to the listed cities.
City	Country or territory	Daytime high	Nighttime low	Precipitation	Days with at least 1 mm	Daylight
Brussels	Belgium	21.0 °C	11.1 °C	64.2 mm	12.0	12.7 h
Dresden	Germany	20.8 °C	10.3 °C	54.5 mm	9.1	12.7 h
Krakow	Poland	21.2 °C	10.5 °C	88.5 mm	11.8	12.7 h
Warsaw	Poland	21.3 °C	10.5 °C	59.7 mm	9.2	12.7 h
Ljubljana	Slovenia	20.7 °C	10.4 °C	154.1 mm	13.0	12.6 h
Addis Ababa	Ethiopia	20.7 °C	11.3 °C	181.0 mm	24.0	12.2 h
Mexico City	Mexico	20.7 °C	10.2 °C	143.7 mm	25.5	12.3 h
Prague	Czechia	21.4 °C	10.0 °C	56.6 mm	9.2	12.7 h

Frequently asked questions

How should I compare the weather in different cities?

Compare daytime highs, nighttime lows and the number of days with precipitation. Daylight also matters for walking routes and is shown separately for each city.

What does the number of days with precipitation mean?

It is the average number of days in the month with at least 1 mm of precipitation. Monthly totals include rain and the water equivalent of snow.

How do I choose another month?

Open a month in the calendar. The link keeps your selected city or country; each city page also has a table for the whole year.