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Montevideo, Uruguay · Temperate oceanic

Montevideo in September: go or not?

Mixed period. Montevideo in September: 4.5/10.

📅 Updated August 2026 🛰️ ERA5 · 10 years 📍 34.90°S · 56.19°W
⚡ This month's verdict
Why not
Montevideo · September
4.5
11–16°
Temperature
26%
Rain
6h
Sun
🌊 Seaside☀️ Bright🍴 Gastronomy
Photo : Odinei Ramone via Unsplash
The month in detail

What to expect in September

Autumn marks the end of peak season in Montevideo. Temperatures drop (16.0°C) and rain returns (26.0% of days). Expect rain on 26.0% of days — a light raincoat in the bag is recommended.

September ranks 9 out of 12 months in Montevideo. Compared to August: +0.7h of sun per day.

This month's conditions

What it's like in September

UV index
6 · moderate
protect during midday hours
Feels like
dry air
10°
Sea
15°C
cold, for the brave
Daylight
11.8h of daylight
Air quality
good
AQI 24
Compare

Is September the right month?

The best month in Montevideo is January (8.6/10), 4.1 pts higher than September.

See January →See all 12 months →
Context

Our verdict

Montevideo, capital of Uruguay : 1.3 million inhabitants (40% of the country's population, which has 3.4 million on 176,000 km² — one of the least populated countries in South America), on the Río de la Plata facing Buenos Aires (200 km by hydrofoil 2h15).

Read Gilles' full review →

Book

Plan your trip

Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.

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Stay
Hotels & rentals · Montevideo
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Activities
Tours, tickets, experiences
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Flights
Multi-airline comparator
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🎟️ Activities & tours · Montevideo

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Practical info

What you need to know before you go

Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a beach holiday.

Country · Uruguay

🗣️LanguageSpanish
💶CurrencyPeso uruguayen ($)
🚗DrivingRight-hand
🛡️Safety ⓘVery safe · 1/5
💰Cost of living ⓘModerate · 3/5

🌡️ Climate

🌍Climate typeTemperate oceanic
📈Climate trend ⓘStable
🔥Hottest monthJanuary · 26°C
❄️Coolest monthJuly · 13°C
🌧️Rainiest month ⓘMarch · 36%

🏖️ Beach holiday

📅Peak seasonJuin → Sept
🏖️Swell (Sept–Mar) ⓘModérée
Explore

Other destinations in September

If September doesn't convince you for this destination, compare with others.

Similar climate
UruguayUruguayPunta del EsteUruguayBuenos AiresArgentinaPorto AlegreBrazilSydneyAustralia
Nearby
RosarioArgentina464 kmCórdobaArgentina839 kmIguazúArgentina1038 kmAsunciónParaguay1080 km
Other top picks
Cape VerdeCape Verde5.3SalCape Verde5.6Marsa AlamEgypt5.8Sharm el-SheikhEgypt5.8HurghadaEgypt5.9
← AugustOctober →
🗺️ See all 754 destinations on the map
Location

Where is Montevideo ?

Global position + regional geographic context.

🌍 World
🔍 Geographic context
Uruguay
Temperate oceanic climate with a 8.6 → 4.2 gap between best and worst month. 10 years of ERA5 data to choose by project.
34.90°S · 56.19°W
Questions

Frequently asked questions

What is the best time to visit Montevideo?
January is the best month with 26.0°C highs, 20.0°C lows, 9.5h of sunshine and 27.0% rainy days. The months of January & December offer comparable conditions.
How many hours of sunshine does Montevideo get in January?
Montevideo averages 9.5 sunshine hours per day in January. It is the sunniest month with a climate score of 8.1/10.
What is the rainiest month in Montevideo?
June is the most unfavourable month with June has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Montevideo in January?
In January, overnight lows reach 20.0°C, while afternoon highs average 26.0°C.
Is Montevideo good in winter?
In winter (December-February), Montevideo scores 7.9/10 on average — Decent period conditions for cultural visits.. The best month overall remains January with a score of 8.1/10.
When should you avoid Montevideo?
June is the most difficult month to visit Montevideo, with June has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Can you swim in Montevideo in September?
In September, the sea averages 15°C in Montevideo: cold, for the brave. Best left to hardened swimmers or those with a wetsuit.
Do you need sun protection in Montevideo in September?
The average UV index reaches 6 in September in Montevideo (moderate), with about 11.8h of daylight. Protect during midday hours.