Rolleston, New Zealand experiences average highs of 17°C (63°F) and lows of 8°C (46°F) throughout the year. Rainfall is moderate, averaging about 8 rainy days per month. Sunshine is abundant, averaging about 9 hours per day. Average highs have stayed broadly stable across the available records.
Rolleston, New Zealand Weather & Climate 2026
Monthly climate averages for Rolleston, New Zealand. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Sep 
Wetter season: Jun–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
6.4/10
Best: January, February, December
UV Index
5
Low
Temperature 17°C / 8°C
Feels Like 15°C / 5°C
Rainy Days 8
Rainfall 56 mm
Sunshine 9 h
Humidity 75%
Wind Speed 20 km/h
Dew Point 8°C
Frost Days 4 days
Hottest Month
23°C
February
Avg Low13°C
Rain6days
Coldest Month
3°C
July
Avg High11°C
Rain9days
Driest Month
6days
February
Avg High23°C
Avg Low13°C
Windiest Month
22 km/h
December (Gusts 44)
Worst Time to Visit
Consider avoiding May, June, July, August due to less favorable weather conditions.
Sun Position
Sunrise 08:03
Daylight 9h
Sunset 17:01
Live conditions—
Rolleston on the map · live conditions
Rolleston, New Zealand
- Continent
- Oceania
- Country
- New Zealand
- City
- Rolleston
- Population
- 33.2K
- Coordinates
- -43.58°, 172.38°
Seasonal Breakdown
Spring
Sep–Nov
Avg High 17°C
Avg Low 7°C
Rain 9 days/mo
Summer
Dec–Feb
Avg High 22°C
Avg Low 12°C
Rain 7 days/mo
3/3 best months
Autumn
Mar–May
Avg High 17°C
Avg Low 8°C
Rain 8 days/mo
Winter
Jun–Aug
Avg High 11°C
Avg Low 3°C
Rain 9 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 23°C / 13°C . Feb: 23°C / 13°C . Mar: 20°C / 11°C . Apr: 17°C / 8°C . May: 14°C / 6°C . Jun: 11°C / 4°C . Jul: 11°C / 3°C . Aug: 12°C / 3°C . Sep: 14°C / 5°C . Oct: 17°C / 7°C . Nov: 20°C / 10°C . Dec: 21°C / 12°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 52 mm. Feb: 48 mm. Mar: 50 mm. Apr: 62 mm. May: 56 mm. Jun: 47 mm. Jul: 77 mm. Aug: 43 mm. Sep: 46 mm. Oct: 66 mm. Nov: 63 mm. Dec: 64 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 69%. Feb: 68%. Mar: 73%. Apr: 76%. May: 81%. Jun: 85%. Jul: 83%. Aug: 80%. Sep: 74%. Oct: 72%. Nov: 70%. Dec: 68%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 22 km/h . Feb: 21 km/h . Mar: 20 km/h . Apr: 19 km/h . May: 18 km/h . Jun: 17 km/h . Jul: 18 km/h . Aug: 18 km/h . Sep: 21 km/h . Oct: 22 km/h . Nov: 22 km/h . Dec: 22 km/h .
Sunshine
Sunshine
Sunshine: Jan: 11h. Feb: 11h. Mar: 9h. Apr: 8h. May: 7h. Jun: 6h. Jul: 6h. Aug: 8h. Sep: 9h. Oct: 10h. Nov: 11h. Dec: 11h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 8. Feb: UV 7. Mar: UV 5. Apr: UV 3. May: UV 2. Jun: UV 2. Jul: UV 2. Aug: UV 3. Sep: UV 5. Oct: UV 6. Nov: UV 7. Dec: UV 8.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Climate Trends
Average highs have stayed broadly stable across the available records. Average rainfall is trending wetter by about 15 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Feb 2025 · 22°C | Feb · 23°C |
| Coldest month | Aug 2025 · 2°C | Jul · 3°C |
| Wettest month | Apr 2025 · 160 mm | Jul · 77 mm |
| Windiest month | Oct 2025 · 27 km/h | Dec · 22 km/h |
Month-by-Month Weather Table
January best
Excellent 
February best
Excellent March
Good April
Good May
Fair June
Poor July
Poor August
Fair September
Fair October
Fair November
Good December best
Excellent | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January best | 23°C / 13°C | 23°C / 11°C | 7days (52 mm) Good | 11.4h Excellent | 69% Muggy | 7.5 Very High | Excellent | View Details |
| February best | 23°C / 13°C | 22°C / 11°C | 6days (48 mm) Good | 10.6h Excellent | 68% Muggy | 6.8 High | Excellent | View Details |
| March | 20°C / 11°C | 19°C / 9°C | 8days (50 mm) Wet | 9.1h Good | 73% Muggy | 5.2 High | Good | View Details |
| April | 17°C / 8°C | 15°C / 6°C | 8days (62 mm) Wet | 8h Good | 76% Humid | 3.3 Moderate | Good | View Details |
| May | 14°C / 6°C | 12°C / 3°C | 8days (56 mm) Wet | 6.9h Fair | 81% Humid | 2.2 Moderate | Fair | View Details |
| June | 11°C / 4°C | 8°C / 0°C | 9days (47 mm) Wet | 5.6h Fair | 85% Humid | 1.6 Low | Poor | View Details |
| July | 11°C / 3°C | 8°C / -1°C | 9days (77 mm) Wet | 6.3h Fair | 83% Humid | 1.9 Low | Poor | View Details |
| August | 12°C / 3°C | 9°C / 0°C | 8days (43 mm) Wet | 7.7h Good | 80% Humid | 3 Moderate | Fair | View Details |
| September | 14°C / 5°C | 12°C / 2°C | 8days (46 mm) Wet | 9.1h Good | 74% Muggy | 4.5 Moderate | Fair | View Details |
| October | 17°C / 7°C | 15°C / 4°C | 11days (66 mm) Wet | 10.3h Excellent | 72% Muggy | 5.8 High | Fair | View Details |
| November | 20°C / 10°C | 19°C / 7°C | 9days (63 mm) Wet | 11.1h Excellent | 70% Muggy | 7.1 Very High | Good | View Details |
| December best | 21°C / 12°C | 21°C / 10°C | 9days (64 mm) Wet | 11.3h Excellent | 68% Muggy | 7.5 Very High | Excellent | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Rolleston are January, February, December, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Rolleston, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Rolleston is February, with average daytime highs of 23°C (73°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Rolleston is July, with average overnight lows of 3°C (37°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Rolleston is July, averaging 77mm of precipitation across 9 rainy days. An umbrella or waterproof jacket is essential.
Rolleston receives approximately 107 sunshine hours per year. The sunniest month is January with around 11 hours. Based on climate data for Rolleston.
The least favorable months to visit Rolleston are May, June, July, August, primarily due to less favorable weather conditions. For the best conditions, consider January, February, December instead.
The annual average UV index in Rolleston is 5, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Rolleston is 75%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Rolleston rarely sees significant snowfall but does experience frost, averaging 4 frost days during the colder months.
Average wind speeds in Rolleston are 20 km/h (12 mph). The windiest month is December with peak winds reaching 22 km/h (14 mph) (gusts up to 44 km/h / 27 mph).
Rolleston averages 3 clear-sky days per month with overall cloud cover around 59%. The clearest skies occur in April.
The annual average dew point in Rolleston is 8°C (46°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Rolleston has a Oceanic climate, classified as Cfb under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Rolleston ranges from 5°C (41°F) to 15°C (59°F) on average. Wind chill makes winters feel noticeably colder than the actual temperature — layered clothing is recommended.
June is not the best time to visit Rolleston, with a climate score of 4.4/10. Consider visiting during January, February, December instead for better conditions.
For June in Rolleston, pack Layered clothing, Light jacket, Umbrella, Comfortable walking shoes. With average highs of 11°C (52°F) and 9 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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