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Merlo, Argentina climate
Cfa Humid subtropical
Merlo has a seasonal mild-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is January with an average daily high near 30°C, while the coldest is July averaging around 5°C at night. Around 1057 mm of precipitation falls each year, peaking in October (114 mm) and easing off in June (50 mm).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Merlo climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 30 | 29 | 27 | 23 | 19 | 16 | 15 | 18 | 19 | 22 | 26 | 29 |
| Avg temp (°C) | 24 | 23 | 21 | 17 | 14 | 11 | 10 | 12 | 14 | 17 | 20 | 23 |
| Avg low (°C) | 18 | 18 | 16 | 12 | 9 | 6 | 5 | 7 | 9 | 12 | 14 | 16 |
| Precipitation (mm) | 106 | 112 | 111 | 105 | 79 | 50 | 56 | 58 | 66 | 114 | 103 | 98 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 30 | 29 | 27 | 23 | 19 | 16 |
| Avg temp (°C) | 24 | 23 | 21 | 17 | 14 | 11 |
| Avg low (°C) | 18 | 18 | 16 | 12 | 9 | 6 |
| Precipitation (mm) | 106 | 112 | 111 | 105 | 79 | 50 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 15 | 18 | 19 | 22 | 26 | 29 |
| Avg temp (°C) | 10 | 12 | 14 | 17 | 20 | 23 |
| Avg low (°C) | 5 | 7 | 9 | 12 | 14 | 16 |
| Precipitation (mm) | 56 | 58 | 66 | 114 | 103 | 98 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 47 | 47 | 46 | 51 | 56 | 58 | 59 | 54 | 55 | 55 | 50 | 46 |
| Relative humidity (%) | 63 | 68 | 71 | 77 | 82 | 83 | 82 | 79 | 76 | 74 | 68 | 63 |
| Wind speed (m/s) | 2.8 | 2.7 | 2.6 | 2.6 | 2.5 | 2.6 | 2.7 | 2.8 | 2.9 | 2.9 | 3.0 | 2.8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 47 | 47 | 46 | 51 | 56 | 58 |
| Relative humidity (%) | 63 | 68 | 71 | 77 | 82 | 83 |
| Wind speed (m/s) | 2.8 | 2.7 | 2.6 | 2.6 | 2.5 | 2.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 59 | 54 | 55 | 55 | 50 | 46 |
| Relative humidity (%) | 82 | 79 | 76 | 74 | 68 | 63 |
| Wind speed (m/s) | 2.7 | 2.8 | 2.9 | 2.9 | 3.0 | 2.8 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the WMO's CLINO 1991–2020 collection, measured at Castelar_inta, about 8 km from the city centre.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.