The chart above shows the best time of year to visit Sion, Switzerland. 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.
Please note our recommendations for when to visit Sion are based solely on the weather and do not take into accounts accommodation prices, how busy it will be and what events are on.
Temp | Rain | Sunshine | Day length |
---|---|---|---|
-0°C | 82mm | 3.5hrs | 10.2hrs |
The climate in Sion during January can be summarized as cold and a little damp.
Based on weather alone, this is probably a time of year to avoid going to Sion for your holidays. The weather is often pretty bad and not conducive to spending time outdoors.
January is in the winter in Sion and is typically the coldest month of the year. Daytime maximum temperatures average around a freezing -0°C (31°F), whilst at night -6°C (21°F) is normal.
On average January is the driest month of the year in Sion with around 82mm 3.2 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 14 days, although this may vary considerably.
On the flip side this corresponds to an average of 3.5 hours of sunshine per day.
Temp | Rain | Sunshine | Day length |
---|---|---|---|
1°C | 81mm | 4.3hrs | 11.4hrs |
February in Sion is generally a little damp with the temperature being cold.
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 Sion.
February is in the winter in Sion and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around a freezing 1°C (33°F), whilst at night -5°C (23°F) is normal.
On average February is the 2nd driest month of the year in Sion with around 81mm 3.2 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 14 days, although this may vary considerably.
On the flip side this corresponds to an average of 4.3 hours of sunshine per day.
Temp | Rain | Sunshine | Day length |
---|---|---|---|
4°C | 78mm | 4.9hrs | 12.8hrs |
The weather in March in Sion is characteristically cool and reasonably dry.
Although outside the main holiday season, there is still plenty of fairly acceptable weather around this time of year. This makes it an okay time to visit Sion.
March is in the spring in Sion and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a cold 4°C (39°F), whilst at night -3°C (26°F) is normal.
On average March is the 3rd driest month of the year in Sion with around 78mm 3.1 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 16 days, although this may vary considerably.
On the flip side this corresponds to an average of 4.9 hours of sunshine per day.
Temp | Rain | Sunshine | Day length |
---|---|---|---|
7°C | 89mm | 5.5hrs | 14.6hrs |
Sion's weather in April is typically cool and a little damp 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 Sion.
April is in the spring in Sion and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a cold 8°C (46°F), whilst at night -0°C (32°F) is normal.
On average April is the 4th driest month of the year in Sion with around 89mm 3.5 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 17 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.5 hours of sunshine per day.
Temp | Rain | Sunshine | Day length |
---|---|---|---|
11°C | 105mm | 5.9hrs | 16.1hrs |
May is a damp month in Sion and the temperature is generally cool.
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 Sion.
May is in the spring in Sion and is typically the 5th coldest month of the year. Daytime maximum temperatures average around a cool 12°C (54°F), whilst at night 4°C (39°F) is normal.
On average May is the 5th driest month of the year in Sion with around 105mm 4.1 inches of rain making it a damp time to visit. This rainfall is typically spread over 19 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.9 hours of sunshine per day.
Temp | Rain | Sunshine | Day length |
---|---|---|---|
14°C | 121mm | 6.7hrs | 10.2hrs |
Sion's weather in June is typically mild and wet in nature.
It is perhaps the perfect month to visit Sion, with some particularly good weather at this time of year.
June is in the summer in Sion and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a cool 16°C (60°F), whilst at night 7°C (45°F) is normal.
On average June is the 6th driest month of the year in Sion with around 121mm 4.8 inches of rain making it a wet time to visit. This rainfall is typically spread over 18 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.7 hours of sunshine per day.
Temp | Rain | Sunshine | Day length |
---|---|---|---|
17°C | 104mm | 7.9hrs | 11.4hrs |
July in Sion is generally damp with the temperature being mild.
It is perhaps the perfect month to visit Sion, with some extremely good weather at this time of year.
July is in the summer in Sion and is typically the 6th warmest month of the year. Daytime maximum temperatures average around 19°C (66°F), whilst at night 10°C (49°F) is normal.
On average July is the 6th wettest month of the year in Sion with around 104mm 4.1 inches of rain making it a damp time to visit. This rainfall is typically spread over 16 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.9 hours of sunshine per day.
Temp | Rain | Sunshine | Day length |
---|---|---|---|
16°C | 128mm | 7.1hrs | 12.8hrs |
The weather in August in Sion is characteristically mild and wet.
It is perhaps a good month to visit Sion, with some very good weather at this time of year.
August is in the summer in Sion and is typically the 5th warmest month of the year. Daytime maximum temperatures average around 18°C (64°F), whilst at night 9°C (49°F) is normal.
On average August is the 5th wettest month of the year in Sion with around 128mm 5.1 inches of rain making it a wet time to visit. This rainfall is typically spread over 16 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.1 hours of sunshine per day.
Temp | Rain | Sunshine | Day length |
---|---|---|---|
13°C | 98mm | 6hrs | 14.6hrs |
Sion's weather in September is typically mild and a little damp in nature.
It is perhaps the perfect month to visit Sion, with some very good weather at this time of year.
September is in the fall / autumn in Sion and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a cool 15°C (59°F), whilst at night 7°C (45°F) is normal.
On average September is the 4th wettest month of the year in Sion with around 98mm 3.9 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 14 days, although this may vary considerably.
On the flip side this corresponds to an average of 6 hours of sunshine per day.
Temp | Rain | Sunshine | Day length |
---|---|---|---|
9°C | 84mm | 4.7hrs | 16.1hrs |
October is a a little damp month in Sion and the temperature is generally cool.
Although outside the main holiday season, there is still plenty of fairly acceptable weather around this time of year. This makes it an okay time to visit Sion.
October is in the fall / autumn in Sion and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a cool 10°C (50°F), whilst at night 4°C (38°F) is normal.
On average October is the 3rd wettest month of the year in Sion with around 84mm 3.3 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 13 days, although this may vary considerably.
On the flip side this corresponds to an average of 4.7 hours of sunshine per day.
Temp | Rain | Sunshine | Day length |
---|---|---|---|
4°C | 101mm | 3.6hrs | 10.2hrs |
The weather in November in Sion is characteristically cool and damp.
Based on weather alone, this is probably a time of year to avoid going to Sion for your holidays. The weather is often pretty bad and not conducive to spending time outdoors.
November is in the fall / autumn in Sion and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a cold 4°C (40°F), whilst at night -2°C (29°F) is normal.
On average November is the 2nd wettest month of the year in Sion with around 101mm 4 inches of rain making it a damp time to visit. This rainfall is typically spread over 14 days, although this may vary considerably.
On the flip side this corresponds to an average of 3.6 hours of sunshine per day.
Temp | Rain | Sunshine | Day length |
---|---|---|---|
1°C | 86mm | 3.4hrs | 11.4hrs |
December in Sion is generally a little damp with the temperature being cold.
Although outside the main holiday season, there is still plenty of quite acceptable weather around this time of year. This makes it an okay time to visit Sion.
December is in the winter in Sion and is typically the warmest month of the year. Daytime maximum temperatures average around a freezing 1°C (34°F), whilst at night -5°C (23°F) is normal.
On average December is the wettest month of the year in Sion with around 86mm 3.4 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 14 days, although this may vary considerably.
On the flip side this corresponds to an average of 3.4 hours of sunshine per day.
Hottest month: | July | 18.4°C 65.1°F |
---|---|---|
Driest month: | March | 78mm 3.1ins |
Sunniest month: | July | 7.9hrs |
Coldest month: | January | -0.5°C 31.1°F |
Wettest month: | August | 128mm 5ins |
Warmest sea: | August | 23.1°C 73.6°F |