Munich Weather
When is the Best Time to Visit?

Due to its location in the South of Germany, Munich weather and climate belongs to the temperate zone. I personally don't believe our climate is temperate, because it can vary between -20 degrees Celsius (-4 °F) in winter and +35 degrees Celsius (95 °F) in summer time.
In case you haven't already decided upon the best time for your visit, due to other constraints like school vacation, lets have a look at what you can expect from Munich's weather each time of the year:

Summer

People from Munich, enjoying this hot summer day in the English Garden The weather in Munich (especially inside the city) can be very hot. We've had summers with temperatures constantly reaching or even surpassing 30 degrees Celsius (90 °F). Enjoy the time as much as you can, because it probably won't last long. The next rainy days are guaranteed.
Yes, unfortunately not even in July or August is it sure that you'll have sunshine all the time. So bring your rain jacket and a sweater, any time of the year. But don't despair, there's enough to discover in Munich, during a rainy day or even a week. Just sitting in the English Garden to picnic and sunbathe like the persons on the picture is out of scope.

Autumn

Isar in autumn with colorful trees in all tones of red and yellow September and October can be lovely. Days are getting shorter, the trees are changing their color to splendid yellow and red tones, the Oktoberfest and several other festivals are about to start, and you'll have the unique opportunity to see persons from all over Bavaria showing up with their Tracht (traditional clothing).
People who don't like hot and dry climate (and apparently most of our friends belong to that group), will tell you, Autumn is the best time of the year to be in Munich.
Again, you can be unlucky and have a lot of rain, but in general days will be sunny and still warm. Just don't come in November! It's definitely the worst month of the year to visit Munich: cold, rainy, grey, foggy.

Winter

The famous olympic stadium in Munich covered with snow in winter time I like winter! Not as much as I love summer, though. When temperatures fall way below freezing point, the air is crisp and fresh, snow flakes slowly fall down from the sky, a quiet and mysterious spirit settles down in the city, and all life seems to be slower and more peaceful. Then you know, it's Christmas time.
Come in winter for the famous Christmas markets, Glühwein (hot wine with spices) and not to forget, to ski in the nearby mountains. At the end of winter everyone is tired of the cold and longing for sun. That's, why ...

Spring

A Munich street with blossoming trees in spring is so eagerly awaited by humans as well as animals and nature. Everyone and everything awakens to a new life. Days become longer and warmer, sun shows up again for more than a few hours, nature looks green and refreshing, flowers blossom and the mood of Munich lightens up.
Spring is the perfect time to visit if you want to be here, before the crowd arrives in summer. Enjoy with the people from Munich how the city transforms itself from her winter lethargy into lively spring atmosphere. Mai and June would be the best months.

Come to Munich whenever you want, just try to avoid November!