Late autumn · Weather & things to do
Milford Sound in May
Milford Sound cools off: highs slip to 53°F (11°C), from 57°F in April, with lows of 44°F (6°C) and about 7.6 in (192 mm) of rain.
Our comfort score puts it mid-table at 47/100, 8th of 12.
- Avg high
- 53°F (11°C)
- Avg low
- 44°F (6°C)
- Rain
- 7.6 in (192 mm)
- Humidity
- 91%
- Cloud cover
- 76%
- Daylight
- ~9 h 23 min
- Comfort score
- 47/100 · Fair
What May feels like
Cool days top out near 53°F (11°C), better for brisk walks than lingering outside.
After dark, temperatures fall to about 44°F (6°C).
Rain is a real factor, with about 7.6 in (192 mm) across the month.
Skies are often grey, with average cloud cover around 76%.
Daylight is short, roughly 9 h 23 min mid-month, so start sightseeing early.
Plan around May
May sits mid-table; the best months are February & March.
- Comfort slips from 60/100 in April to 47/100.
- Our South Island Alps & Fiords route recommends Nov – Mar, so May falls outside its suggested window.
What to pack for May
- Insulated jackethighs only 53°F
- Rain jacket and waterproof shoes7.6 in of rain on average
- Comfortable walking shoesmost picks involve some walking
What to do in Milford Sound in May
A mixed month: these picks balance outdoor stops with indoor fallbacks.
Pio Pio Restaurant
Milford Sound's only restaurant: Fiordland venison and crayfish, open daily for lunch and dinner.
Why now A warm sit-down stop when highs sit around 53°F.
Homer Tunnel
1.2 km rough-hewn tunnel through the Darran Mountains; watch for kea at the portal.
Milford Sound Cruise
Boat to the Tasman Sea mouth past Mitre Peak, Stirling Falls and fur seals.
Key Summit Track
Climb from The Divide to an alpine plateau with views of the Darran and Humboldt ranges.
The Chasm
Short forest walk to where the Cleddau River carves holes in the rock.
Nearby in May
- Queenstown in May~44 mi · highs 51°F, 4.8 in rain · similar daytime temperatures, drier
- Aoraki / Mount Cook in May~126 mi · highs 48°F, 7.0 in rain · 3°C (5°F) cooler by day, about as wet
- Christchurch in May~247 mi · highs 57°F, 3.1 in rain · 3°C (5°F) warmer by day, drier
NASA POWER 2001–2025 monthly averages on a ~50 km grid, temperatures adjusted from the grid cell's ~643 m to Milford Sound's ~271 m elevation (standard lapse rate). Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Milford Sound in May: quick answers
Is May a good time to visit Milford Sound?
It's middling, scoring 47/100. The best months are February & March, at up to 72. Expect highs of 53°F (11°C) and 7.6 in (192 mm) of rain. Our South Island Alps & Fiords route recommends Nov – Mar, so May is outside its suggested window.
How cold is Milford Sound in May?
Average highs are 53°F (11°C) and average lows 44°F (6°C), making it the 5th-coldest month by daytime highs.
Does it rain a lot in Milford Sound in May?
Yes: about 7.6 in (192 mm) of rain falls across May on average, the 5th-wettest month of the year. The annual total is about 83.8 in (2128 mm).
What should I pack for Milford Sound in May?
Bring insulated jacket (highs only 53°F), rain jacket and waterproof shoes (7.6 in of rain on average) and comfortable walking shoes (most picks involve some walking).
More on Milford Sound
Planning Milford Sound in May?
Plan it together in TripsCircle: one itinerary, one shared packing list and costs split as you go.