Argentina (Buenos Aires) · September
Low seasonArgentina · South America
Climate Overview
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Ø day, range from coolest to warmest dayØ dayrange | 31° (88°)23– (73–)36 (97) | 29° (84°)21– (70–)35 (95) | 27° (81°)19– (66–)33 (91) | 23° (73°)16– (61–)29 (84) | 19° (66°)12– (54–)25 (77) | 16° (61°)10– (50–)22 (72) | 16° (61°)8– (46–)24 (75) | 18° (64°)10– (50–)27 (81) | 20° (68°)11– (52–)26 (79) | 23° (73°)14– (57–)29 (84) | 27° (81°)18– (64–)34 (93) | 29° (84°)21– (70–)35 (95) |
Ø night, range from coldest to warmest nightØ nightrange | 19° (66°)10– (50–)25 (77) | 18° (64°)9– (48–)24 (75) | 16° (61°)7– (45–)22 (72) | 13° (55°)4– (39–)19 (66) | 9° (48°)1– (34–)17 (63) | 7° (45°)-2– (28–)15 (59) | 6° (43°)-2– (28–)15 (59) | 7° (45°)-1– (30–)16 (61) | 9° (48°)1– (34–)16 (61) | 12° (54°)3– (37–)18 (64) | 15° (59°)6– (43–)22 (72) | 17° (63°)8– (46–)23 (73) |
☀️Sunshine | 10h | 10h | 9h | 7h | 6h | 6h | 5h | 6h | 6h | 6h | 8h | 11h |
🌊Water Temp | 26° (79°) | 25° (77°) | 24° (75°) | 20° (68°) | 17° (63°) | 13° (55°) | 11° (52°) | 12° (54°) | 15° (59°) | 18° (64°) | 21° (70°) | 24° (75°) |
🌧Rain Days | 6d102mm (4.0") | 6d103mm (4.1") | 5d110mm (4.3") | 5d83mm (3.3") | 4d61mm (2.4") | 3d38mm (1.5") | 4d56mm (2.2") | 4d56mm (2.2") | 5d74mm (2.9") | 6d94mm (3.7") | 5d94mm (3.7") | 6d82mm (3.2") |
Best travel time current monthØ = average · small figures = range: coolest–warmest day / coldest–warmest nightClimate data 2005–2025 · Source: ERA5 + station data
Off-season — lowest travel prices with still acceptable climate.
September in Argentina (Buenos Aires) is on the cool side — with highs around 20°C (68°F) it's less suited for a beach holiday, but good for sightseeing away from the high season.
Daytime highs average 20°C (68°F), cooling to 9°C (48°F) at night (daily average: 15°C (59°F)). Peaks reach around 26°C (79°F), the coldest nights around 1°C (34°F). With 6 sunshine hours per day and 5 rain days (74 mm (2.9 in)), this is one of the cloudier months. At 15°C (59°F), the water is still quite cool in September — a wetsuit may be useful.
A jacket for cool evenings should not be left behind. Sightseeing and excursions can be enjoyed comfortably at this time of year.
Spring in BA: jacaranda trees bloom purple in Palermo and Belgrano, temperatures rise pleasantly and the café terraces along Corrientes reopen.
Packing list for Argentina (Buenos Aires) in September
- Long-sleeved shirts and light trousers
- Light jacket
- Jumper or fleece
- Sunscreen
- Sunglasses
- Small umbrella (occasional showers possible)
- Travel first-aid kit
Frequently Asked Questions
- Is September a good time to visit Argentina (Buenos Aires)?
- September is not an optimal month for Argentina (Buenos Aires) (Score: 54/100), but it is manageable. For better conditions, consider January, February, March, November, and December.
- How warm is it in Argentina (Buenos Aires) in September?
- In September, Argentina (Buenos Aires) sees daily highs of 20°C (68°F). Nights cool to 9°C (48°F), with a daily average of 15°C (59°F). Peaks reach around 26°C (79°F), the coldest nights around 1°C (34°F).
- How much rain falls in Argentina (Buenos Aires) in September?
- In September, Argentina (Buenos Aires) receives an average of 74 mm (2.9 in) of rain over 5 rain days. The rain falls on few days, but heavily.
- How many sunshine hours does Argentina (Buenos Aires) get in September?
- Argentina (Buenos Aires) averages 6 sunshine hours per day in September — below the annual average.
- How warm is the water in Argentina (Buenos Aires) in September?
- Water temperature in Argentina (Buenos Aires) in September averages 15°C (59°F) — still quite cool — a wetsuit may be useful.
