Climate averages 1991–2020
Merlo weather
in March.
A warm, moderately wet month: the 4th warmest and the 6th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
March is a warm month in Merlo: daytime highs average 25.7°C and nights cool to about 16.7°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 85 mm of rain on roughly 8 days, which makes March a moderately wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 19 min on an average March day.
The nearest other city in this atlas is Moreno (7 km away). In March its highs average 25.6°C, about as warm as Merlo, with 85 mm of rain.
Among the 67 cities listed in Argentina, Merlo ranks joint 34th of 67 for the warmest March highs and joint 22nd of 67 for the driest March (rainfall, lowest first). The mean March high of those 67 cities is 25.6°C; Merlo is 0.1°C warmer than that mean.
From March to April, average highs fall by 3.9°C to 21.8°C, and monthly rainfall rises from 85 mm to 91 mm.
The annual picture
March in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Merlo climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.2°C19.2°C | 19.2°C | 88 | 7.7 | 14.214 h |
| February | 27.8°C18.4°C | 18.4°C | 94 | 8.3 | 13.413 h |
| March, selected | 25.7°C16.7°C | 16.7°C | 85 | 7.5 | 12.312 h |
| April | 21.8°C13.1°C | 13.1°C | 91 | 8.1 | 11.211 h |
| May | 18.0°C10.0°C | 10.0°C | 62 | 6.2 | 10.310 h |
| June | 15.0°C7.1°C | 7.1°C | 58 | 5.9 | 9.910 h |
| July | 14.2°C6.0°C | 6.0°C | 57 | 6.0 | 10.110 h |
| August | 16.6°C7.4°C | 7.4°C | 60 | 5.8 | 10.811 h |
| September | 18.5°C9.1°C | 9.1°C | 71 | 6.7 | 11.812 h |
| October | 21.3°C11.9°C | 11.9°C | 111 | 9.2 | 12.913 h |
| November | 24.7°C14.6°C | 14.6°C | 92 | 8.4 | 13.914 h |
| December | 27.9°C17.4°C | 17.4°C | 87 | 8.6 | 14.414 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
March in nearby cities
- Moreno in MarchArgentina · 7 kmHigh 25.6°C · Low 16.6°C · 85 mm rain
- Bella Vista in MarchArgentina · 12 kmHigh 25.6°C · Low 16.8°C · 91 mm rain
- Isidro Casanova in MarchArgentina · 13 kmHigh 25.4°C · Low 16.9°C · 85 mm rain
- San Miguel, Argentina in MarchArgentina · 14 kmHigh 25.4°C · Low 16.9°C · 91 mm rain
- Laferrere in MarchArgentina · 16 kmHigh 25.5°C · Low 16.8°C · 85 mm rain
- José C. Paz in MarchArgentina · 17 kmHigh 25.6°C · Low 16.7°C · 91 mm rain
- Don Torcuato in MarchArgentina · 21 kmHigh 25.1°C · Low 17.4°C · 91 mm rain
- Ezeiza in MarchArgentina · 28 kmHigh 25.4°C · Low 16.6°C · 85 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Merlo) is explained once on the Merlo year overview and on the Sources, method and limits page.
Moreno lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.