When is the best time to go to San Juan
The chart above shows the best time of year to visit San Juan, Argentina. These are based on an analysis of weather averages such as temperature, rainfall and number of hours of sunshine. These ratings are based solely on the climate and do not take into account other factors such as accommodation prices and how busy it is likely to be.
Average temperatures in San Juan
San Juan weather by month
Please note our recommendations for when to visit San Juan are based solely on the weather and do not take into accounts accommodation prices, how busy it will be and what events are on.
January
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 30°C | 19mm | 11.2hrs | 14.8hrs |
The weather in January in San Juan is characteristically hot and dry.
Based on weather alone, this is probably a time of year to avoid going to San Juan for your holidays. The weather is often pretty bad and not conducive to spending time outdoors.
January is in the summer in San Juan and is typically the coldest month of the year. Daytime maximum temperatures average around a warm 34°C (93°F), whilst at night 18°C (65°F) is normal.
On average January is the driest month of the year in San Juan with around 19mm 0.8 inches of rain making it a dry time to visit. This rainfall is typically spread over 5 days, although this may vary considerably.
On the flip side this corresponds to an average of 11.2 hours of sunshine per day.
February
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 29°C | 18mm | 10.7hrs | 14hrs |
February in San Juan is generally dry with the temperature being hot.
Based on weather alone, this is probably a time of year to avoid going to San Juan for your holidays. The weather is often relatively bad and not conducive to spending time outdoors.
February is in the summer in San Juan and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around 32°C (90°F), whilst at night 17°C (62°F) is normal.
On average February is the 2nd driest month of the year in San Juan with around 18mm 0.7 inches of rain making it a dry time to visit. This rainfall is typically spread over 5 days, although this may vary considerably.
On the flip side this corresponds to an average of 10.7 hours of sunshine per day.
San Juan weather in February »
March
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 26°C | 11mm | 9.4hrs | 13.1hrs |
The weather in March in San Juan is characteristically warm and dry.
It is perhaps the perfect month to visit San Juan, with some surprisingly good weather at this time of year.
March is in the fall / autumn in San Juan and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a comfortable 29°C (84°F), whilst at night 14°C (57°F) is normal.
On average March is the 3rd driest month of the year in San Juan with around 11mm 0.4 inches of rain making it a dry time to visit. This rainfall is typically spread over 4 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.4 hours of sunshine per day.
April
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 22°C | 4mm | 8.5hrs | 12.2hrs |
San Juan's weather in April is typically mild and very dry in nature.
Although outside the main holiday season, there is still plenty of relatively acceptable weather around this time of year. This makes it an okay time to visit San Juan.
April is in the fall / autumn in San Juan and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a comfortable 24°C (76°F), whilst at night 9°C (48°F) is normal.
On average April is the 4th driest month of the year in San Juan with around 4mm 0.2 inches of rain making it a very dry time to visit.
On the flip side this corresponds to an average of 8.5 hours of sunshine per day.
May
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 17°C | 2mm | 7.5hrs | 11.4hrs |
May is a very dry month in San Juan and the temperature is generally mild.
Based on weather alone, this is probably a time of year to avoid going to San Juan for your holidays. The weather is often relatively bad and not conducive to spending time outdoors.
May is in the fall / autumn in San Juan and is typically the 5th coldest month of the year. Daytime maximum temperatures average around a cool 19°C (67°F), whilst at night 5°C (40°F) is normal.
On average May is the 5th driest month of the year in San Juan with around 2mm 0.1 inches of rain making it a very dry time to visit.
On the flip side this corresponds to an average of 7.5 hours of sunshine per day.
June
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 14°C | 3mm | 6.9hrs | 14.8hrs |
The climate in San Juan during June can be summarized as cool and very dry.
Based on weather alone, this is probably a time of year to avoid going to San Juan for your holidays. The weather is often not a good and not conducive to spending time outdoors.
June is in the winter in San Juan and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a cool 16°C (60°F), whilst at night 1°C (33°F) is normal.
On average June is the 6th driest month of the year in San Juan with around 3mm 0.1 inches of rain making it a very dry time to visit.
On the flip side this corresponds to an average of 6.9 hours of sunshine per day.
July
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 14°C | 4mm | 7.5hrs | 14hrs |
July in San Juan is generally very dry with the temperature being cool.
Based on weather alone, this is probably a time of year to avoid going to San Juan for your holidays. The weather is often not a good and not conducive to spending time outdoors.
July is in the winter in San Juan and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a cool 16°C (60°F), whilst at night 0°C (32°F) is normal.
On average July is the 6th wettest month of the year in San Juan with around 4mm 0.1 inches of rain making it a very dry time to visit.
On the flip side this corresponds to an average of 7.5 hours of sunshine per day.
August
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 17°C | 2mm | 8.3hrs | 13.1hrs |
The weather in August in San Juan is characteristically mild and very dry.
Based on weather alone, this is probably a time of year to avoid going to San Juan for your holidays. The weather is often relatively bad and not conducive to spending time outdoors.
August is in the winter in San Juan and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a cool 19°C (66°F), whilst at night 3°C (37°F) is normal.
On average August is the 5th wettest month of the year in San Juan with around 2mm 0.1 inches of rain making it a very dry time to visit.
On the flip side this corresponds to an average of 8.3 hours of sunshine per day.
September
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 20°C | 4mm | 9hrs | 12.2hrs |
San Juan's weather in September is typically mild and very dry in nature.
Although outside the main holiday season, there is still plenty of reasonably acceptable weather around this time of year. This makes it an okay time to visit San Juan.
September is in the spring in San Juan and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 22°C (72°F), whilst at night 6°C (43°F) is normal.
On average September is the 4th wettest month of the year in San Juan with around 4mm 0.2 inches of rain making it a very dry time to visit.
On the flip side this corresponds to an average of 9 hours of sunshine per day.
San Juan weather in September »
October
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 24°C | 6mm | 10.1hrs | 11.4hrs |
October is a very dry month in San Juan and the temperature is generally warm.
It is perhaps the perfect month to visit San Juan, with some extremely good weather at this time of year.
October is in the spring in San Juan and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a comfortable 27°C (80°F), whilst at night 11°C (51°F) is normal.
On average October is the 3rd wettest month of the year in San Juan with around 6mm 0.3 inches of rain making it a very dry time to visit.
On the flip side this corresponds to an average of 10.1 hours of sunshine per day.
November
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 27°C | 9mm | 11.4hrs | 14.8hrs |
The weather in November in San Juan is characteristically warm and very dry.
It is perhaps the perfect month to visit San Juan, with some very good weather at this time of year.
November is in the spring in San Juan and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a comfortable 30°C (87°F), whilst at night 14°C (58°F) is normal.
On average November is the 2nd wettest month of the year in San Juan with around 9mm 0.4 inches of rain making it a very dry time to visit.
On the flip side this corresponds to an average of 11.4 hours of sunshine per day.
San Juan weather in November »
December
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 30°C | 11mm | 11.6hrs | 14hrs |
December in San Juan is generally dry with the temperature being hot.
Based on weather alone, this is probably a time of year to avoid going to San Juan for your holidays. The weather is often relatively bad and not conducive to spending time outdoors.
December is in the summer in San Juan and is typically the warmest month of the year. Daytime maximum temperatures average around a warm 33°C (92°F), whilst at night 18°C (64°F) is normal.
On average December is the wettest month of the year in San Juan with around 11mm 0.4 inches of rain making it a dry time to visit. This rainfall is typically spread over 4 days, although this may vary considerably.
On the flip side this corresponds to an average of 11.6 hours of sunshine per day.
Other monthly averages
San Juan weather stats
| Hottest month: | January | 33.3°C 91.9°F |
|---|---|---|
| Driest month: | May | 2mm 0.1ins |
| Sunniest month: | November | 11.4hrs |
| Coldest month: | July | 15.3°C 59.5°F |
| Wettest month: | January | 19mm 0.7ins |
| Warmest sea: | February | 19.5°C 67.1°F |
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