South Island - New Zealand weather in August 2025
South Island - New Zealand weather in August 2025
Day
11 °C
Night
2 °C
Sea
11 °C
Precipitation
91 mm
in month
Rainy days
11 days
in month
Daylight
10 hours
average
Sunshine
4 hours
average
Humidity
83 %
Day
11 °C
Night
2 °C
Sea
11 °C
Precipitation
91 mm
in month
Rainy days
11 days
in month
Daylight
10 hours
average
Sunshine
4 hours
average
Humidity
83 %
Overview: South Island - New Zealand
Travel information
Flights
to
Activities
in Christchurch
Weather charts for South Island - New Zealand
Data backed by 40 years of history
We make the most from 40 years of historical weather data to predict the best weather conditions.
Selection of world's favourite destinations
Deciding on where to go for a holiday is hard sometimes. Get inspired by the most popular destinations.
16 500 000 weather records
We aggregate data from combining multiple weather sources to ensure accuracy of the highest order.
Find more destinations like this
Activities in South Island - New Zealand
Destinations in South Island - New Zealand
Destinations with similar weather to South Island - New Zealand
Weather overview and FAQs
Weather overview
In South Island in August, the average air temperature ranges from 11 °C (53 °F) during the day to 2 °C (36 °F) at night. There are 11 days of rain on average, where the rainfall is 91 mm (3.57 in).
Is August a good month to visit South Island?
In August there are not good conditions to visit South Island. A relatively low temperature of 11 °C (53 °F) may be ideal for walking or outdoor activities, but some people may have a different idea of the holiday. The night temperature of 2 °C (36 °F) is not inviting for evening and night activities except for visiting a bar and having beer or two.
What is the temperature in South Island during the day in August?
In South Island in August, the average daily temperatures will be 11 °C (53 °F). Don't forget a sweater and light or normal jacket, but also pack light clothing in case the temperatures are above average. The weather at this time can be somewhat changeable and a wide range of clothing can become handy.
How many rainy days can I expect in South Island in August?
In South Island in August, we can expect 11 days to be rainy, that is, days when precipitation exceeds 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 2.6 days of the week, or in general - 38 % days.
What is the rainfall intensity in South Island in August?
In South Island in August, there is 91 mm (3.57 in) rainfall, which means on average 3 mm (0.12 in) rainfall per day.
What is the air temperature in August in South Island at night?
The average night temperature in South Island in August is 2 °C (36 °F). The nights will be cool, layers of clothes will be needed for evening and morning walks, the hotel should be equipped with heating.
Is the weather in South Island warmer in August than in July?
Yes, in South Island in August it is warmer than in July by 2 °C (35 °F).
Is August part of the wet season in South Island?
No, there is no wet season in South Island in August - you can expect 11 days of rain during the month.
What level of humidity is to expect in August in South Island?
Humidity in South Island in August is 83 %.
Is August part of the dry season in South Island?
No, August is not a dry month in South Island, expect rain approximately 11 days in a month.
How long is the day (from dawn till dusk) in South Island in August?
The length of daylight in South Island in August is 10 hours.
Is the temperature rising or falling in the course of time in South Island in August?
Over the course of August in South Island, the temperatures are rising from 10 °C (51 °F) at the beginning of the month to 13 °C (55 °F) at the end of the month.
How windy is it in South Island in August?
An average wind scale that can be expected in South Island in August is 4.