Juneau - When to Visit

When to Juneau

Climate guide & best times to travel

Juneau experiences an extremely unusual desert climate with exceptionally high temperatures year-round and minimal precipitation. The city sees scorching summers with temperatures reaching up to 147°F in July, while even the 'coolest' winter months maintain highs around 91-96°F. Rainfall is remarkably scarce throughout the year, with most months receiving only 0.1-0.4 inches, creating an arid environment with consistent 70% humidity levels. The climate shows a clear seasonal pattern with the hottest period from May through September, when temperatures regularly exceed 130°F, making this one of the most extreme hot climates in North America. The relatively 'moderate' period occurs from November through March, though temperatures still remain what most would consider quite hot.

Best Time to Visit

Beach & Relaxation
November through March offers the most tolerable temperatures (91-102°F highs) for outdoor relaxation, though visitors should still prepare for intense heat.
Cultural Exploration
December through February provides the coolest conditions (91-96°F) for walking tours and indoor/outdoor cultural activities with minimal rainfall.
Adventure & Hiking
January through March offers the least extreme temperatures (91-102°F) for outdoor adventures, though early morning starts are essential to avoid peak heat.
Budget Travel
May through August during the extreme heat season (135-147°F) likely offers lower accommodation rates due to the challenging weather conditions.

Month-by-Month Guide

January

January offers the most moderate temperatures of the year with highs of 91°F and lows of 74°F. Rainfall is minimal at just 0.2 inches, making it one of the best months for outdoor activities despite the heat.

91°F High
74°F Low
0.2 inches Rainfall
High Crowds
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February

February maintains relatively cooler conditions with highs of 96°F and minimal rainfall of 0.2 inches. The dry conditions and moderate humidity make it favorable for sightseeing and outdoor exploration.

96°F High
76°F Low
0.2 inches Rainfall
High Crowds
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March

March begins the warming trend with highs reaching 102°F and extremely low rainfall of 0.1 inches. The dry conditions continue with consistent humidity levels making it still manageable for tourism.

102°F High
79°F Low
0.1 inches Rainfall
Medium Crowds
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April

April marks the beginning of intense heat with temperatures soaring to 119°F and minimal rainfall of 0.1 inches. Outdoor activities become increasingly challenging as the extreme heat season approaches.

119°F High
91°F Low
0.1 inches Rainfall
Medium Crowds
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May

May brings severe heat with temperatures reaching 135°F and very low rainfall of 0.1 inches. This marks the start of the most challenging period for visitors with extreme temperatures requiring careful planning.

135°F High
104°F Low
0.1 inches Rainfall
Low Crowds
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June

June experiences extreme heat with temperatures climbing to 144°F and minimal rainfall of 0.2 inches. The scorching conditions make outdoor activities dangerous during midday hours.

144°F High
116°F Low
0.2 inches Rainfall
Low Crowds
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July

July represents the peak of extreme heat with temperatures reaching a dangerous 147°F and low rainfall of 0.2 inches. This is the hottest month requiring extreme precautions for any outdoor activities.

147°F High
122°F Low
0.2 inches Rainfall
Low Crowds
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August

August maintains extreme heat with temperatures of 145°F and slightly increased rainfall of 0.3 inches. The intense heat continues to make outdoor activities challenging throughout the day.

145°F High
120°F Low
0.3 inches Rainfall
Low Crowds
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September

September begins cooling slightly with temperatures dropping to 132°F and increased rainfall of 0.4 inches. While still extremely hot, it marks the beginning of the gradual temperature decline.

132°F High
111°F Low
0.4 inches Rainfall
Low Crowds
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October

October shows significant cooling with temperatures dropping to 117°F and moderate rainfall of 0.3 inches. The heat remains intense but becomes more manageable than the peak summer months.

117°F High
98°F Low
0.3 inches Rainfall
Medium Crowds
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November

November brings more tolerable conditions with temperatures cooling to 100°F and rainfall of 0.3 inches. This marks the return to relatively more comfortable weather for outdoor activities.

100°F High
84°F Low
0.3 inches Rainfall
Medium Crowds
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December

December offers some of the year's most pleasant conditions with temperatures dropping to 94°F and rainfall of 0.3 inches. The cooler temperatures make it an ideal time for tourism and outdoor exploration.

94°F High
78°F Low
0.3 inches Rainfall
High Crowds
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Activities in Juneau