Buenos Aires at a glance
- Best time
- Aug – May
- Warmest month
- Jan · 28°
- Warmest sea
- Jan · 25.5°
- Sunshine a year
- 2,850 h
- Rain a year
- 922 mm
- Climate
- Temperate
- Time zone
- UTC−3
- Elevation
- 31 m
Climate in Buenos Aires
Buenos Aires has a temperate climate with warm summers and cool winters. January is the warmest month with average highs of 28 °C, while July is the coolest at 14 °C. With around 2,850 hours of sunshine a year, Buenos Aires is sunny; January is the sunniest month with 10.4 hours a day.
Weather in October
Holiday weather in October
Excellent
Best time to visit: August – May
What is the weather like in Buenos Aires in October?
In October, Buenos Aires is mild: daytime highs average 21 °C, and nights cool down to about 13 °C. The sea averages 18.7 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 8 hours a day. Rain falls on about 9 days, adding up to 95 mm. All in all, October is an excellent month for a holiday in Buenos Aires.
More details for October
- Daylight
- 12 h 54 min06:12 – 19:06
- UV index
- 9 · very highclear sky, noon (estimate)
- Muggy days
- 1 daydew point 18 °C or more
- Wind
- 21 km/haverage daily peak
- Cloud cover
- 51 %on average
- Hot days
- 0 days30 °C or more
- Time zone
- UTC−3America/Argentina/Buenos_Aires
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %82 %
- Few rainy daysweight 30 %66 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Wetsuit for longer swims
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
Sea temperature in Buenos Aires
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 17.6 – 20.0 °C
Swimming season: Nov – Apr
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Buenos Aires ranges from 12.8 °C in July to 25.5 °C in January. It is warm enough for a comfortable swim (20 °C and more) from November to April.
In May the sea is even warmer than the afternoon air. The sea temperature varies from year to year: in January, eight out of ten years were between 24.3 and 26.7 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 25.5° | 24.3° | 26.7° | pleasant |
| FebruaryFeb | 25.2° | 23.8° | 26.7° | pleasant |
| MarchMar | 23.8° | 22.7° | 24.9° | pleasant |
| AprilApr | 20.7° | 19.7° | 21.7° | refreshing |
| MayMay | 17.3° | 16.2° | 18.5° | fresh |
| JuneJun | 14.1° | 12.9° | 15.3° | cold |
| JulyJul | 12.8° | 12.0° | 14.3° | cold |
| AugustAug | 13.8° | 12.9° | 15.0° | cold |
| SeptemberSep | 15.6° | 14.3° | 16.8° | cold |
| OctoberOct | 18.7° | 17.6° | 20.0° | fresh |
| NovemberNov | 21.6° | 20.3° | 23.2° | refreshing |
| DecemberDec | 23.9° | 22.4° | 25.4° | pleasant |
Sunshine hours in Buenos Aires
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 7.9 of 12.9 hours of daylight in Buenos Aires, 61 % of the day.
Sunshine hours count the time with bright, direct sunshine (WMO definition, estimated from model data); daylight is the time from sunrise to sunset on the 15th of the month.
Rain in Buenos Aires: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Buenos Aires has about 9 rainy days with 95 mm of rain in total.
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sea | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|---|
| JanuaryJan | 87 | 28° | 21° | 25.5° | 10.4 h | 8 | 82 |
| FebruaryFeb | 90 | 27° | 20° | 25.2° | 8.9 h | 9 | 97 |
| MarchMar | 88 | 25° | 18° | 23.8° | 8.0 h | 8 | 99 |
| AprilApr | 85 | 21° | 15° | 20.7° | 7.0 h | 8 | 85 |
| MayMay | 81 | 17° | 11° | 17.3° | 6.0 h | 6 | 60 |
| JuneJun | 69 | 14° | 9° | 14.1° | 5.9 h | 5 | 43 |
| JulyJul | 64 | 14° | 8° | 12.8° | 6.0 h | 6 | 58 |
| AugustAug | 76 | 16° | 9° | 13.8° | 6.6 h | 6 | 64 |
| SeptemberSep | 87 | 17° | 11° | 15.6° | 7.4 h | 6 | 67 |
| OctoberOct | 86 | 21° | 13° | 18.7° | 7.9 h | 9 | 95 |
| NovemberNov | 91 | 24° | 16° | 21.6° | 9.5 h | 8 | 91 |
| DecemberDec | 91 | 27° | 19° | 23.9° | 10.2 h | 8 | 83 |
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)
34.61° S, 58.38° W · 31 m · America/Argentina/Buenos_Aires
Best time to visit Buenos Aires
The best time to visit Buenos Aires is from August to May. For a beach holiday with the sea above 21 °C, go from November to March. For sightseeing, day trips and hiking, conditions are most comfortable from August to May. The wettest month is March with 99 mm of precipitation.
Find your perfect month
Tell us what you like and we rate every month in Buenos Aires for you.
Your best months: March, November
Based on the climate averages; tap a month to see its details.
Which month for what?
Beach & swimming
Nov – Mar
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Aug – May
15–28 °C and not too much rain
Buenos Aires month by month
The typical weather for every month at a glance.
87January28° · Sea 26° · 10 h
In January, Buenos Aires is hot: daytime highs average 28 °C, and even at night it stays warm at around 21 °C. The sea averages 25.5 °C – pleasant for swimming. With around 10 hours of sunshine a day, there is plenty of sun. Rain falls on about 8 days, adding up to 82 mm. On about 8 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, January is an excellent month for a holiday in Buenos Aires.
Buenos Aires in January90February27° · Sea 25° · 9 h
In February, Buenos Aires is warm: daytime highs average 27 °C, and nights cool down to about 20 °C. The sea averages 25.2 °C – pleasant for swimming. The sun shines for around 9 hours a day. Rain falls on about 9 days, adding up to 97 mm. All in all, February is an excellent month for a holiday in Buenos Aires.
Buenos Aires in February88March25° · Sea 24° · 8 h
In March, Buenos Aires is warm: daytime highs average 25 °C, and nights cool down to about 18 °C. The sea averages 23.8 °C – pleasant for swimming. The sun shines for around 8 hours a day. Rain falls on about 8 days, adding up to 99 mm. All in all, March is an excellent month for a holiday in Buenos Aires.
Buenos Aires in March85April21° · Sea 21° · 7 h
In April, Buenos Aires is mild: daytime highs average 21 °C, and nights cool down to about 15 °C. The sea averages 20.7 °C – refreshing for a swim. The sun shines for around 7 hours a day. Rain falls on about 8 days, adding up to 85 mm. All in all, April is an excellent month for a holiday in Buenos Aires.
Buenos Aires in April81May17° · Sea 17° · 6 h
In May, Buenos Aires is mild: daytime highs average 17 °C, and nights cool down to about 11 °C. The sea averages 17.3 °C – bracing, so a wetsuit helps for longer swims. Expect around 6 hours of sunshine a day. Rain falls on about 6 days, adding up to 60 mm. All in all, May is an excellent month for a holiday in Buenos Aires.
Buenos Aires in May69June14° · Sea 14° · 6 h
In June, Buenos Aires is cool: daytime highs average 14 °C, and nights cool down to about 9 °C. The sea averages 14.1 °C – swimming is only for the hardy. Expect around 6 hours of sunshine a day. Rain falls on about 5 days, adding up to 43 mm. All in all, June is a good month for a holiday in Buenos Aires.
Buenos Aires in June64July14° · Sea 13° · 6 h
In July, Buenos Aires is cool: daytime highs average 14 °C, and nights cool down to about 8 °C. The sea averages 12.8 °C – swimming is only for the hardy. Expect around 6 hours of sunshine a day. Rain falls on about 6 days, adding up to 58 mm. All in all, July is a good month for a holiday in Buenos Aires.
Buenos Aires in July76August16° · Sea 14° · 7 h
In August, Buenos Aires is cool: daytime highs average 16 °C, and nights cool down to about 9 °C. The sea averages 13.8 °C – swimming is only for the hardy. The sun shines for around 7 hours a day. Rain falls on about 6 days, adding up to 64 mm. All in all, August is a good month for a holiday in Buenos Aires.
Buenos Aires in August87September17° · Sea 16° · 7 h
In September, Buenos Aires is mild: daytime highs average 17 °C, and nights cool down to about 11 °C. The sea averages 15.6 °C – swimming is only for the hardy. The sun shines for around 7 hours a day. Rain falls on about 6 days, adding up to 67 mm. All in all, September is an excellent month for a holiday in Buenos Aires.
Buenos Aires in September86October21° · Sea 19° · 8 h
In October, Buenos Aires is mild: daytime highs average 21 °C, and nights cool down to about 13 °C. The sea averages 18.7 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 8 hours a day. Rain falls on about 9 days, adding up to 95 mm. All in all, October is an excellent month for a holiday in Buenos Aires.
Buenos Aires in October91November24° · Sea 22° · 10 h
In November, Buenos Aires is warm: daytime highs average 24 °C, and nights cool down to about 16 °C. The sea averages 21.6 °C – refreshing for a swim. With around 10 hours of sunshine a day, there is plenty of sun. Rain falls on about 8 days, adding up to 91 mm. All in all, November is an excellent month for a holiday in Buenos Aires.
Buenos Aires in November91December27° · Sea 24° · 10 h
In December, Buenos Aires is warm: daytime highs average 27 °C, and nights cool down to about 19 °C. The sea averages 23.9 °C – pleasant for swimming. With around 10 hours of sunshine a day, there is plenty of sun. Rain falls on about 8 days, adding up to 83 mm. All in all, December is an excellent month for a holiday in Buenos Aires.
Buenos Aires in DecemberPlanning a trip to Buenos Aires
Getting there
Flying from
- Nonstop flight
- about 13 h 55 min
- Distance
- 11,110 km
- Time zone
- UTC−3
Most routes need a change of planes, which adds time.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Frequently asked questions about Buenos Aires
When is the best time to visit Buenos Aires?
The best time to visit Buenos Aires is from August to May. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Buenos Aires?
The sea temperature in Buenos Aires ranges from 12.8 °C in July to 25.5 °C in January. It is warm enough for a comfortable swim (20 °C and more) from November to April.
Can you swim in Buenos Aires in October?
Only if you don't mind cold water: in October the sea averages just 18.7 °C. Comfortable swimming is possible from November to April.
What is the warmest month in Buenos Aires?
January is the warmest month, with average highs of 28 °C and nights around 21 °C. July is the coolest month at 14 °C.
When does it rain most in Buenos Aires?
The wettest month is March with 99 mm of precipitation. The driest month is June with 43 mm.
How many hours of sunshine does Buenos Aires get?
Buenos Aires gets around 2,850 hours of sunshine a year. The sunniest month is January with 10.4 hours a day; in June there are 5.9 hours a day.
What time zone is Buenos Aires in?
Buenos Aires uses the time zone America/Argentina/Buenos_Aires, at UTC−3 all year.
How long is the flight from London to Buenos Aires?
A nonstop flight from London to Buenos Aires takes about 13 h 55 min, for a straight-line distance of about 11,110 km. Most routes need a change of planes, which adds time.
Near Buenos Aires
Other destinations close by.