Europe’s highly varied geography spans over 45 countries with climates ranging from the sunny Greek isles to arctic Norwegian fjords. While each region of Europe has different weather, there are a few common trends. In northern European countries--such as Sweden, Norway, Finland, Denmark, the Netherlands and the UK--December through March is quite a cold time period, with significant snowfall.
Meanwhile, southern European areas--including the south of France, Italy, Spain, Portugal and Greece--tend to boast sunny days almost year-round, though rainfall is common in winter. These southern areas also have the hottest summers; inland regions such as central Spain can become uncomfortably hot in July and August. Spring and fall are generally milder, though northern countries see plenty of rainfall and chilly temperatures.
We’d highly recommend either the Spring (February, March and April) when temperatures are on average in the low 70s or Autumn (September, October and November) when temperatures are still good, around the high 70’s.
The Winter months are not really Winter as most of us know it. There are occasional days of rain, and the odd deluge of snow in Jerusalem and the upper reaches of the Galilee and Golan Heights, but it is fairly mild in Israel.
As mentioned above, you probably won’t enjoy the peak summer months of July and August, especially in the center of the country where the humidity levels can prove stifling. Average summer temperatures in the center of the country are over 86F and closer to 104C in the South and Galilee.