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The city of Lima is located in a flat area of the coastal desert of Peru about 10 km from the Pacific ocean coast. Due to its position, between the sea and the Andes and in the desert area, the climate of Lima is a particular climate which is a mixture of desert climate and sub-tropical climate. This means that temperatures are mild, that rainfall is completely absent, and that the humidity in the air is high. The total absence of rainfall is balanced by the strong humidity that comes from the Pacific ocean and which makes the Lima sky often cloudy. These climatic characteristics are influenced by the cold Humboldt sea current that laps the Peruvian coast.
CLOUDS COVER THE LIMA SKIES FOR MOST OF THE YEAR. BUT THE RAINS ARE ABSENT
Lima is characterized by relatively cool temperatures – due to the latitude at which the city is located – and which suffer from rather reduced seasonal excursions. The rains are absent, but the clouds cover the skies of the city for most of the year. Lima has only 1,230 hours of sunshine per year. The sunniest months are those from December to April.
The average annual temperature is 19.2 ° C. The hottest months are those of January, February and March during which the average maximum temperatures exceed 26 ° C, in February they reach 26.8 °. In these months also the average minimum temperatures are high exceeding 19 ° C. The coldest months are the winter months of July, August and September when the average maximum temperatures do not exceed 19 ° C. While in the coldest month, August, they reach 18.8 ° C. The average minimum temperatures mark 14.9 ° C in August and September.
The rains are absent, there is rarely a minimum chance of seeing a few drops of rain. In the months from June to November the fog is persistent and almost constant in the skies of Lima. The winter months of July, August and September are almost always characterized by fog and cloudy skies. The average annual humidity is 83%.
WHEN TO GO TO LIMA
The best time to visit Lima and the entire Peruvian coast are the months of October to April. Among these, the months between December and April are excellent, which are the sunniest months and those in which the city is often free from the cold fog that instead covers it for the rest of the year.
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THE CLIMATE OF LIMA: CLIMATE TABLES
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| LIMA (34 meters) | ||||
| Month | Average low (°C) | Average high (°C) | Precip. (mm) | Precip. days |
| January | 19,4 | 26,1 | 0,8 | 0,7 |
| February | 19,8 | 26,8 | 0,4 | 0,7 |
| March | 19,5 | 26,3 | 0,4 | 0,7 |
| April | 17,9 | 24,5 | 0,1 | 0,3 |
| May | 16,4 | 22,0 | 0,3 | 1,1 |
| June | 15,6 | 20,1 | 0,7 | 2,3 |
| July | 15,2 | 19,1 | 1,0 | 3,0 |
| August | 14,9 | 18,8 | 1,5 | 4,1 |
| September | 14,9 | 19,1 | 0,7 | 3,1 |
| October | 15,5 | 20,3 | 0,2 | 1,2 |
| November | 16,6 | 22,1 | 0,1 | 0,4 |
| December | 18,2 | 24,4 | 0,2 | 0,5 |
| YEAR | 17,2 | 22,5 | 6,4 | 18,2 |
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