Weather and climate in Salto (Uruguay)

The climate of Salto is subtropical (Köppen classification: humid subtropical climate - Cfa), with very mild winters (June to August) and hot summers (December to March). Rainfall is abundant and there is no dry season, however, winter is the relatively driest season, while in summer, rainfall often occurs in the form of thunderstorms.
The city is located in the northwest of Uruguay, at 31 degrees south latitude, on the border with Argentina, on the banks of the Uruguay River, beyond which lies the city of Concordia. North of the two cities, the Salto Grande dam widens the river into a lagoon.



During the day it can get hot all year round, in fact the heat records are around 30 °C (86 °F) even in winter. Instead, from November to March, in summer, there can be heat waves, in which the temperature reaches or exceeds 38/40 °C (100/104 °F). But the Pampero, the south wind, is able to interrupt the hot and sultry periods, bringing pleasant (and sometimes very cool) weather for two or three days.
In winter, there can be cold waves from the south, during which the temperature can drop to the freezing point or a little below at night, and can remain around 10 °C (50 °F) during the day.

Best Time

---

It is difficult to find the best time to visit Salto, also because there can be sudden changes in temperature. Anyway, you can choose the periods from mid-April to mid-May and the month of September, two periods in which both temperature and rainfall are halfway between winter and summer.
Winter is a very mild and relatively dry season, but it can sometimes get cold, especially at night.
In spring, sometimes starting from mid-August, it can get very hot. Summer is the sunniest season, but it is hot and muggy, and thunderstorms can break out.

Salto - Climate data

The average temperature of the coldest month (July) is of 12.7 °C (54.8 °F), that of the warmest month (January) is of 25.9 °C (78.7 °F). Here are the average temperatures.
Precipitation amounts to 1400 millimeters (55.1 inches) per year: it is therefore quite abundant. It ranges from 55 mm (2.2 in) in the driest month (July) to 160 mm (6.3 in) in the wettest ones (March, April) Here is the average precipitation.
There are on average around 2850 sunshine hours per year. Here are the average hours of sunshine per day.

Salto - Weather by month

Based on the period 1991-2020

---

January, the hottest month of the year, is generally a warm to hot month. However, there are remarkable differences between night and day. The average temperature is of 25.9 °C (79 °F), with a minimum of 19 °C (66.3 °F) and a maximum of 32.8 °C (91.1 °F).
On the coldest nights of the month, the temperature usually drops to around 12.5 °C (55 °F). However, it dropped to 9 °C (48.2 °F) in January 2013.
On the warmest days of the month, the temperature usually reaches around 38 °C (100.5 °F). However, it reached 41 °C (105.8 °F) in January 2005.
Precipitation amounts to 120 mm (4.7 in), distributed over 5 days.
The day lasts on average 13 hours and 55 minutes.
There are on average 10 hours of sunshine per day. So, the sun shines 73% of the time.
The average humidity is 62%.
The average wind speed is 12 kph (8 mph).

---

February is generally a warm to hot month. The average temperature is of 24.9 °C (77 °F), with a minimum of 18.4 °C (65 °F) and a maximum of 31.4 °C (88.5 °F).
On the coldest nights of the month, the temperature usually drops to around 11.5 °C (52.5 °F). However, it dropped to 8.6 °C (47.5 °F) in February 2013.
On the warmest days of the month, the temperature usually reaches around 36.5 °C (98 °F). However, it reached 39.8 °C (103.6 °F) in February 2003.
Precipitation amounts to 130 mm (5.1 in), distributed over 6 days.
The day lasts on average 13 hours and 10 minutes.
There are on average 9.5 hours of sunshine per day. So, the sun shines 71% of the time.
The average humidity is 67%.
The average wind speed is 12 kph (7 mph).

---

March is generally a warm to hot month. However, there are remarkable differences between night and day. The average temperature is of 23.0 °C (73 °F), with a minimum of 16.4 °C (61.5 °F) and a maximum of 29.5 °C (85.2 °F).
On the coldest nights, the temperature usually drops to around 9 °C (48.5 °F). However, it dropped to 5.2 °C (41.4 °F) in March 2012.
On the warmest days, the temperature usually reaches around 35 °C (95.5 °F). However, it reached 39.2 °C (102.6 °F) in March 2005.
Precipitation amounts to 160 mm (6.3 in), distributed over 5 days.
The day lasts on average 12 hours and 10 minutes.
There are on average 8.5 hours of sunshine per day. So, the sun shines 71% of the time.
The average humidity is 69%.
The average wind speed is 11 kph (7 mph).

---

April is generally a warm month. The average temperature is of 19.5 °C (67 °F), with a minimum of 13.2 °C (55.7 °F) and a maximum of 25.9 °C (78.6 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 5 °C (41.5 °F). However, it dropped to 0.6 °C (33.1 °F) in April 2008.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 32 °C (90 °F). However, it reached 35.2 °C (95.4 °F) in April 2004.
Precipitation amounts to 160 mm (6.3 in), distributed over 5 days.
The day lasts on average 11 hours and 20 minutes.
There are on average 7 hours of sunshine per day. So, the sun shines 63% of the time.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is 11 kph (7 mph).

---

May is generally a very mild month. The average temperature is of 15.8 °C (60 °F), with a minimum of 10.1 °C (50.1 °F) and a maximum of 21.5 °C (70.7 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 2 °C (35.5 °F). However, it dropped to -2 °C (28.4 °F) in May 2007.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 28.5 °C (83 °F). However, it reached 32.4 °C (90.3 °F) in May 2008.
Precipitation amounts to 95 mm (3.7 in), distributed over 5 days.
The day lasts on average 10 hours and 30 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 61% of the time.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is 10 kph (6 mph).

---

June is generally a mild month. The average temperature is of 13.4 °C (56 °F), with a minimum of 7.7 °C (45.9 °F) and a maximum of 19 °C (66.2 °F).
On the coldest nights, the temperature usually drops to around -1 °C (30.5 °F). However, it dropped to -6 °C (21.2 °F) in June 2002.
On the warmest days, the temperature usually reaches around 26 °C (79 °F). However, it reached 32.8 °C (91 °F) in June 2002.
Precipitation amounts to 75 mm (3 in), distributed over 5 days.
The day lasts on average 10 hours and 5 minutes. June 21, the winter solstice, is the shortest day of the year in the Southern Hemisphere.
There are on average 5 hours of sunshine per day. So, the sun shines 51% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is 11 kph (7 mph).

---

July, the coldest month of the year, is generally a mild month. The average temperature is of 12.7 °C (55 °F), with a minimum of 6.7 °C (44 °F) and a maximum of 18.7 °C (65.6 °F).
On the coldest nights of the month, the temperature usually drops to around -2 °C (29 °F). However, it dropped to -5 °C (23 °F) in July 2012.
On the warmest days of the month, the temperature usually reaches around 27.5 °C (81 °F). However, it reached 31.6 °C (88.9 °F) in July 2005.
Precipitation amounts to 55 mm (2.2 in), distributed over 4 days.
The day lasts on average 10 hours and 25 minutes.
There are on average 6 hours of sunshine per day. So, the sun shines 57% of the time.
The average humidity is 75%. Hence, the air is normally humid.
The average wind speed is 12 kph (7 mph).

---

August is generally a very mild month. However, there are remarkable differences between night and day. The average temperature is of 14.7 °C (58 °F), with a minimum of 8 °C (46.4 °F) and a maximum of 21.4 °C (70.4 °F).
On the coldest nights of the month, the temperature usually drops to around -0.5 °C (31 °F). However, it dropped to -2.6 °C (27.3 °F) in August 1997.
On the warmest days of the month, the temperature usually reaches around 30.5 °C (87.5 °F). However, it reached 35.5 °C (95.9 °F) in August 1993.
Precipitation amounts to 60 mm (2.4 in), distributed over 4 days.
The day lasts on average 11 hours and 0 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 60% of the time.
The average humidity is 69%.
The average wind speed is 13 kph (8 mph).

---

September is generally a very mild month. However, there are remarkable differences between night and day. The average temperature is of 16.5 °C (62 °F), with a minimum of 9.8 °C (49.7 °F) and a maximum of 23.1 °C (73.5 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 2 °C (35.5 °F). However, it dropped to -2 °C (28.4 °F) in September 2019.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 31.5 °C (89 °F). However, it reached 37 °C (98.6 °F) in September 2004.
Precipitation amounts to 85 mm (3.3 in), distributed over 5 days.
The day lasts on average 12 hours and 0 minutes.
There are on average 7 hours of sunshine per day. So, the sun shines 59% of the time.
The average humidity is 67%.
The average wind speed is 14 kph (9 mph).

---

October is generally a warm month. The average temperature is of 19.4 °C (67 °F), with a minimum of 13 °C (55.3 °F) and a maximum of 25.8 °C (78.5 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 5.5 °C (42 °F). However, it dropped to -0.8 °C (30.6 °F) in October 1999.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 33.5 °C (92.5 °F). However, it reached 37.2 °C (99 °F) in October 1993.
Precipitation amounts to 135 mm (5.3 in), distributed over 6 days.
The day lasts on average 12 hours and 55 minutes.
There are on average 8 hours of sunshine per day. So, the sun shines 63% of the time.
The average humidity is 68%.
The average wind speed is 14 kph (9 mph).

---

November is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of 22.0 °C (72 °F), with a minimum of 15 °C (59.1 °F) and a maximum of 28.9 °C (84.1 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 8 °C (46.5 °F). However, it dropped to 3.6 °C (38.5 °F) in November 2003.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 35.5 °C (96 °F). However, it reached 38 °C (100.4 °F) in November 1999.
Precipitation amounts to 140 mm (5.5 in), distributed over 5 days.
The day lasts on average 13 hours and 40 minutes.
There are on average 9.5 hours of sunshine per day. So, the sun shines 69% of the time.
The average humidity is 62%.
The average wind speed is 14 kph (8 mph).

---

December is generally a warm to hot month. However, there are remarkable differences between night and day. The average temperature is of 24.5 °C (76 °F), with a minimum of 17.5 °C (63.5 °F) and a maximum of 31.4 °C (88.6 °F).
On the coldest nights of the month, the temperature usually drops to around 11 °C (51.5 °F). However, it dropped to 6.2 °C (43.2 °F) in December 2010.
On the warmest days of the month, the temperature usually reaches around 37 °C (99 °F). However, it reached 40.2 °C (104.4 °F) in December 1995.
Precipitation amounts to 125 mm (4.9 in), distributed over 5 days.
The day lasts on average 14 hours and 10 minutes. So the days are long. December 21, the summer solstice, is the longest day of the year in the Southern Hemisphere.
There are on average 10 hours of sunshine per day. So, the sun shines 69% of the time.
The average humidity is 60%.
The average wind speed is 13 kph (8 mph).