Oamaru Weather in May
Oamaru in May averages 13°C (55°F) during the day and 7°C (45°F) at night. Some rainfall is typical for this time of year.
Rainfall in Oamaru in May
You can expect rain on roughly 9 days based on historical data, averaging 57 mm (2.2 in) for the month. Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.
Temperature in Oamaru in May
May in Oamaru brings moderate temperatures, with highs of 13°C (55°F) and nights around 7°C (45°F). The difference between afternoon and evening temperatures is usually noticeable. At 7°C (45°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.For Oamaru itself, January and February generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit New Zealand, check out our Oamaru's climate page.
Oamaru Temperature in May
Min Temperature
7°C (45°F)
Max Temperature
13°C (55°F)
Chance of Rain
29%
Precipitation
57 mm (2.2 in)
Rainy days
9 days
Daily Historical Temperatures
47-year average (1976-2025)
Based on our historical records, temperatures in Oamaru typically stay consistent throughout May, with daily highs averaging around 13°C (55°F). Nights are cold, with lows typically ranging from 6°C (43°F) to 8°C (46°F).
Average temperatures in May
Historical weather for Oamaru in May
Browse day-by-day weather records for Oamaru spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Oamaru historical weather extremes in May
Based on 19 years of weather observations in Oamaru between 2006 and 2025, these are the recorded extremes.
- The hottest May day on record in Oamaru reached 31°C (88°F) (May 7, 2019).
- On May 28, 2013, Oamaru saw its coldest May day with temperatures maxing out at 6°C (43°F).
- The coldest night in May in Oamaru was on May 26, 2021, with a minimum of -2°C (28°F).
Best Places in New Zealand in May
Find out more about the weather in New Zealand and which places have the best travel conditions in this month. See all of New Zealand in May →
perfect weather
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What to Wear in Oamaru in May
The weather can be unpredictable in May, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. Rain is likely on several days, so bring a good rain jacket.What To Do in Oamaru in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit New Zealand, check out our Oamaru's climate page.
See the full Oamaru climate overview or explore weather in New Zealand.
