Monthly climate guide
Merlo weather in October
October in Merlo is typically warm, with average daytime highs around 22°C (72°F) and night-time lows near 11°C (51°F). The month usually brings about 117 mm of rain (wet) and is often cloudy. Daytime highs are 3°C warmer than September and 4°C cooler than November.
What stands out in October
- Seasonally, October counts as mid-spring in Merlo — the seasons are reversed south of the equator.
- Expect a big gap between day and night — about 12°C.
- Temperatures are climbing — November is around 4°C warmer.
- Merlo is usually about 2°C warmer than Buenos Aires, 30 km away, in October.
It's usually the wettest month of the year.
Avg high
22°C
72°F
Avg low
11°C
51°F
Rainfall
117 mm
wet
Humidity
76%
relative
Sky
56%
cloud · often cloudy
Merlo weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 31°C / 89°F | 18°C / 65°F | 100 mm | 64% | 44% |
| February | 30°C / 86°F | 18°C / 64°F | 114 mm | 68% | 45% |
| March | 27°C / 81°F | 15°C / 59°F | 89 mm | 70% | 40% |
| April | 24°C / 74°F | 12°C / 54°F | 111 mm | 76% | 50% |
| May | 19°C / 66°F | 9°C / 48°F | 81 mm | 82% | 57% |
| June | 16°C / 61°F | 5°C / 42°F | 49 mm | 82% | 54% |
| July | 15°C / 59°F | 5°C / 40°F | 77 mm | 82% | 58% |
| August | 18°C / 64°F | 6°C / 43°F | 78 mm | 79% | 53% |
| September | 20°C / 68°F | 8°C / 46°F | 92 mm | 76% | 51% |
| October | 22°C / 72°F | 11°C / 51°F | 117 mm | 76% | 56% |
| November | 27°C / 80°F | 14°C / 57°F | 110 mm | 69% | 45% |
| December | 30°C / 86°F | 16°C / 62°F | 102 mm | 62% | 42% |
What to pack for October
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- An extra layer — evenings are noticeably cooler than afternoons
- A compact umbrella or packable rain jacket
- Water-resistant shoes
Is October a good time to visit Merlo?
Compare the months in the chart above to find your ideal window.
Best time to visit Merlo →Other Argentina cities in October
Cite or embed this data
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Merlo weather in October. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/argentina/merlo/october
<a href="https://weathercompare.eu/weather/argentina/merlo/october">Merlo weather in October</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/argentina/merlo" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Merlo weather in October"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/argentina/merlo/october">Merlo weather in October</a> – WeatherCompare</p>
Merlo in October: quick answers
Is October a good time to visit Merlo?
October is one of the wetter months in Merlo, with about 117 mm of rain. You can still go: pack a rain jacket and keep plans flexible.
How warm is Merlo in October?
Average highs are about 22°C (72°F) and average lows about 11°C (51°F), based on 10 years of daily data.
Does it rain a lot in Merlo in October?
Merlo typically gets around 117 mm of rain in October — wet. It's usually the wettest month of the year.
Figures are long-term averages for the area around Merlo (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.