Alaska (Juneau) · May
Best travel monthTravel seasonUSA · North America
Climate Overview
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Ø day, range from coolest to warmest dayØ dayrange | 2° (36°)-8– (18–)7 (45) | 2° (36°)-6– (21–)8 (46) | 4° (39°)-3– (27–)9 (48) | 9° (48°)3– (37–)15 (59) | 14° (57°)7– (45–)22 (72) | 16° (61°)10– (50–)25 (77) | 17° (63°)12– (54–)24 (75) | 17° (63°)11– (52–)23 (73) | 13° (55°)9– (48–)18 (64) | 9° (48°)4– (39–)13 (55) | 4° (39°)-3– (27–)9 (48) | 2° (36°)-6– (21–)7 (45) |
Ø night, range from coldest to warmest nightØ nightrange | -2° (28°)-13– (9–)4 (39) | -2° (28°)-12– (10–)3 (37) | -1° (30°)-9– (16–)3 (37) | 2° (36°)-3– (27–)6 (43) | 7° (45°)1– (34–)10 (50) | 10° (50°)5– (41–)13 (55) | 12° (54°)8– (46–)13 (55) | 11° (52°)7– (45–)14 (57) | 9° (48°)3– (37–)12 (54) | 5° (41°)-2– (28–)9 (48) | 0° (32°)-8– (18–)5 (41) | -1° (30°)-10– (14–)4 (39) |
☀️Sunshine | 1h UV 1 | 3h UV 2 | 4h UV 4 | 6h UV 5 | 8h UV 6 | 6h UV 6 | 5h UV 5 | 5h UV 4 | 2h UV 3 | 3h UV 2 | 3h UV 2 | 2h UV 1 |
🌊Water Temp | 6° (43°) | 5° (41°) | 5° (41°) | 6° (43°) | 8° (46°) | 11° (52°) | 13° (55°) | 14° (57°) | 13° (55°) | 11° (52°) | 8° (46°) | 7° (45°) |
🌧Rain Days | 16d176mm (6.9") | 11d108mm (4.2") | 11d90mm (3.5") | 11d94mm (3.7") | 10d96mm (3.8") | 10d103mm (4.0") | 13d134mm (5.3") | 15d175mm (6.9") | 18d229mm (9.0") | 17d219mm (8.6") | 16d165mm (6.5") | 14d155mm (6.1") |
Best travel time current monthØ = average · small figures = range: coolest–warmest day / coldest–warmest nightClimate data 2005–2025 · Source: ERA5 + station data
Travel season — mid-range prices, good availability.
May is one of the best months to visit Alaska (Juneau) — with 8 sunshine hours per day and pleasant highs of 14°C (57°F).
Temperatures reach a maximum of 14°C (57°F) during the day and drop to 7°C (45°F) at night — warm layers recommended. Peaks reach around 22°C (72°F), the coldest nights around 1°C (34°F). The sun shines an average of 8 hours per day; there are 10 rain days with 96 mm (3.8 in) total. At 8°C (46°F), the water is still quite cool in May — a wetsuit may be useful.
Layer up — warm days and cool evenings alternate. Perfect timing for hikes and sightseeing.
Spring arrives with long days and the sun, which breaks through most often in May. The first cruise ships dock and humpback whales return to the waters off town. The Mendenhall Glacier sits in fresh green, and prices are still gentler than in high summer.
Packing list for Alaska (Juneau) in May
- Warm jacket
- Jumpers and warm layers
- Long trousers
- Warm shoes
- SPF 50 sunscreen
- Sunglasses
- Sun hat
- Light umbrella or rain poncho
- Travel first-aid kit
Frequently Asked Questions
- Is May a good time to visit Alaska (Juneau)?
- Yes — May is one of the best months to visit Alaska (Juneau) (Climate Score: 65/100). Pleasant temperatures (14°C (57°F)), good sunshine (8 h/day), and few rain days (10) make it one of the most recommended months.
- How warm is it in Alaska (Juneau) in May?
- In May, Alaska (Juneau) sees daily highs of 14°C (57°F). Nights cool to 7°C (45°F), with a daily average of 10°C (50°F). Peaks reach around 22°C (72°F), the coldest nights around 1°C (34°F).
- How much rain falls in Alaska (Juneau) in May?
- In May, Alaska (Juneau) receives an average of 96 mm (3.8 in) of rain over 10 rain days. An umbrella may occasionally be needed.
- How many sunshine hours does Alaska (Juneau) get in May?
- Alaska (Juneau) averages 8 sunshine hours per day in May — above the annual average.
- How warm is the water in Alaska (Juneau) in May?
- Water temperature in Alaska (Juneau) in May averages 8°C (46°F) — still quite cool — a wetsuit may be useful.
