Country Overview For Switzerland
The climate in Switzerland is typically temperate, but varies with altitude; cold, cloudy, rainy/snowy winters; cool to warm, cloudy, humid summers with occasional showers. The terrain: mostly mountains (Alps in south, Jura in northwest) with a central plateau of rolling hills, plains, and large lakes. For Bern in January the daily average maximum temperatures is 7°C with the average minimum -3°C, while in June the average maximum is 25°C with a minimum of 13°C. The wettest month for Bern is November with an average of 164.4mm of precipitation falling while the driest month is February with 51.6mm falling.
HISTORICAL MONTHLY AVERAGES FOR APRIL
The information presented below gives detailed historical monthly average weather conditions along with exceptional weather occurrences. To maintain relevance to current weather trends the displayed information has been calculated using data collected over the past two decades. The climate profile is taken from closest available data source to Grindelwald.
Temperature
Throughout the month of April daytime temperatures will generally reach highs of around -7°C that's about 19°F. At night the average minimum temperature drops down to around -13°C, that's 9°F.
In recent times the highest recorded temperature in April has been 4°C that's 39°F, with the lowest recorded temperature -24°C, about -12°F.
Relative Humidity
The average daily relative humidity for April is around 73%.
Heat Index
The Heat Index is a measure of how hot it feels when relative humidity is added to actual air temperature. From this a comfort level is calculated providing categories on how heat conditions might adversely affect someone.
Comfort Levels: Given average maximum temperatures and humidity levels generally you should not anticipate any discomfort from heat (see heat index for more information).
Precipitation
The average monthly amount of precipitation has been recorded at around 0 mm, that's 0 inches. Throughout the month you can expect to see rain or drizzle falling on 1 days of the month, with snow falling on 21 days.
Estimated Hours of Sunshine per Day
We calculate sunshine hours per day using our past forecast data. For April expect the sun to shine for an average of 5 hours per day. This represents the average number of hours in the daytime that the sun is visible and not obscured by cloud e.g. the average number of hours the sun is actually out and shining. Note we calculate hours of sunshine per day using our past forecast data, not observation data, thus it is an estimate and not actual.
Wind
The average daily wind speed in April has been around 28 km/h, that’s the equivalent to about 18 mph, or 15 knots. In recent years the maximum sustained wind speed has reached 144 km/h, that’s the equivalent of around 90 mph, or 78 knots.
Fog
On average the month of April is affected by foggy conditions on 2 days.
YEARLY TRENDS: WEATHER AVERAGES & EXTREMES
The following charts show yearly weather trends with information on monthly weather averages and extremes.
Temperature
The chart below plots the average high and low temperature for each month of the year. It also shows the maximum and minimum recorded temperatures.
Precipitation Amount
The chart below plots the average monthly precipitation amount.
Rain days
The chart below plots the average number of days in any month that you can expect to see rain falling.
Snow days
The chart below plots the average number of days in any month that you can expect to see snow falling.
Wind Speed
The chart below plots the average daily wind speed you can expect for any month. It also shows the maximum recorded sustained wind speed for each month.