In March the departments of Puno, Tacna and Junín registered the lowest temperatures

The National Institute of Statistics and Informatics (INEI) informed that according to the monitoring of the 12 stations of the National Service of Meteorology and Hydrology (SENAMHI), the departments of Puno, Tacna and Junín registered the lowest temperatures during the month of March of 2025.

In the technical report Environmental Statistics is stated that in Puno, the stations that registered a greater decrease of temperature were: Mazo Cruz (-5.2 °C), Macusani (-3.0 °C), Crucero Alto (-1.4 °C) and Cojata (-1.3 °C); in Tacna, the station of Bocatoma (-3.6 °C); in Arequipa, the stations of Imata (-2.6 °C), Pillones (-2.2 °C), Salinas (-2.0 °C) and the station of Tisco (-1.0 °C). In the department of Junín, the station of Laive (-3.2 °C); and in Pasco, the station of Cerro de Pasco (-0.4 °C).

During the month of March of 2025 and according to the information reached by the Service of Potable Water and Sewerage Service of Lima Metropolitan area (SEDAPAL), the potable water production in Lima Metropolitan area reached 71 million 647 thousand cubic meters, which represented a decrease of 2.3% compared to the same month of 2024.

During the month under analysis, the flow of Rimac River reached 77.30 m3/s a higher figure by 61.9% and 30.6% compared to the month of March of 2024 and to its historic average, respectively.

Meanwhile, the average flow of the Chillon River reached 14.10 m3/s a result that meant an increase of 42.0% and 17.5% compared to the month of March of 2024 and to its historic average, respectively.

During the third month of the current year and according to the information provided by the National Service of Meteorology and Hydrology (SENAMHI), it was observed a significative increase in the flows of the rivers of the North Pacific watershed. The flow of the Chira River reached 382.77 m3/s a higher figure by 302.4% and 42.6% compared to the month of March of 2024 and to its historic average, respectively. The average flow of the Jequetepeque River (175.12 m3/s) grew 292.6% and 84.0% compared to the third month of 2024 and to its historic average.

On the other hand, the flow of the Tumbes River totalized 550.76 m3/s a higher figure by 161.9% and 66.1% compared to the third month of the last year and to its historic average, respectively; and the flow of the Calvas River (55.27 m3/s) increased by 67.7% compared to March of 2024, nevertheless, it decreased by 34.7% compared to its historic average.

According to the data provided by the SENAMHI, during the month of March of 2025, the average of the rainfalls registered in the Huamani station located on the south zone of the Pacific Ocean watershed was of 0.20 millimeters, which meant a decrease of 97.8% and 89.5% compared to the same month of the last year and to its historic average, respectively.

In the Cabanaconde station (86.62 millimeters) the rainfalls reduced by 52.6% compared to the month of March of 2024; meanwhile it increased 3.9% compared to its historic average. The same behavior was observed in the Pillones station where the rainfalls reached 87.90 millimeters, a lower figure by 18.6% compared to that of March of 2024 and higher in 9.1% compared to its historic average.

During the month of March of 2025 and according to the information of the National Institute of Civil Defense (INDECI) were registered 2 thousand 857 emergencies at national level, higher in 96.8% compared to the same month of 2024. The emergencies left 62 thousand 247 affected people, 54 thousand 689 affected households, 3 thousand 860 households destroyed and 15 thousand 355 hectares of crops destroyed.

The departments with a greater number of emergencies were: Huancavelica (369), Cusco (344), Ancash (259), Apurímac (247), Cajamarca (235), Huánuco (209), La Libertad (181), Puno (132),

Ayacucho (120), Amazonas (106), Pasco (100), Piura (98), Lima (97), Junín (93), Arequipa (74), San

Martín (37), Lambayeque (35), Loreto (26), Ucayali (25), Tacna (18), Tumbes (16), Moquegua (13),

Madre de Dios (11), Ica (10) and Callao (2).

The emergencies were mainly caused by heavy rains (1,797), landslides (316), floods (195), erosions (145), collapse of hill (128), fires (urban and industrial) (121), strong winds (61), huaycos (51), low temperatures (20), transport accidents in river or coastal navigation (9), electric storms (5), pests (3), avalanches (2); finally by pollution, tidal wave and earthquake (1 in each case).