Masterton, New Zealand experiences average highs of 16°C (61°F) and lows of 10°C (50°F) throughout the year. Rainfall is moderate, averaging about 12 rainy days per month. Sunshine is abundant, averaging about 9 hours per day. Average highs have stayed broadly stable across the available records.
Masterton, New Zealand Weather & Climate 2026
Monthly climate averages for Masterton, New Zealand. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Jun 
Wetter season: Jul–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
6.3/10
Best: January, February, March, December
UV Index
5
Low
Temperature 16°C / 10°C
Feels Like 15°C / 7°C
Rainy Days 12
Rainfall 84 mm
Sunshine 9 h
Humidity 83%
Wind Speed 25 km/h
Dew Point 10°C
Frost Days 2 days
Hottest Month
22°C
February
Avg Low13°C
Rain8days
Coldest Month
6°C
August
Avg High12°C
Rain14days
Driest Month
8days
February
Avg High22°C
Avg Low13°C
Windiest Month
29 km/h
September (Gusts 57)
Worst Time to Visit
Consider avoiding June, July, August, September due to frequent rain.
Sun Position
Sunrise 07:42
Daylight 9.2h
Sunset 16:56
Live conditions—
Masterton on the map · live conditions
Masterton, New Zealand
- Continent
- Oceania
- Country
- New Zealand
- City
- Masterton
- Population
- 28.7K
- Coordinates
- -40.96°, 175.66°
Seasonal Breakdown
Spring
Sep–Nov
Avg High 16°C
Avg Low 9°C
Rain 13 days/mo
Summer
Dec–Feb
Avg High 21°C
Avg Low 13°C
Rain 10 days/mo
3/3 best months
Autumn
Mar–May
Avg High 17°C
Avg Low 10°C
Rain 10 days/mo
1/3 best months
Winter
Jun–Aug
Avg High 12°C
Avg Low 6°C
Rain 13 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: 21°C / 14°C . Feb: 22°C / 13°C . Mar: 19°C / 12°C . Apr: 17°C / 10°C . May: 15°C / 8°C . Jun: 13°C / 7°C . Jul: 12°C / 6°C . Aug: 12°C / 6°C . Sep: 14°C / 7°C . Oct: 16°C / 9°C . Nov: 18°C / 11°C . Dec: 20°C / 13°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 66 mm. Feb: 79 mm. Mar: 75 mm. Apr: 79 mm. May: 69 mm. Jun: 83 mm. Jul: 92 mm. Aug: 85 mm. Sep: 90 mm. Oct: 82 mm. Nov: 97 mm. Dec: 110 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 79%. Feb: 78%. Mar: 80%. Apr: 83%. May: 85%. Jun: 88%. Jul: 86%. Aug: 85%. Sep: 83%. Oct: 82%. Nov: 81%. Dec: 80%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 25 km/h . Feb: 24 km/h . Mar: 24 km/h . Apr: 23 km/h . May: 23 km/h . Jun: 22 km/h . Jul: 24 km/h . Aug: 24 km/h . Sep: 29 km/h . Oct: 27 km/h . Nov: 26 km/h . Dec: 26 km/h .
Sunshine
Sunshine
Sunshine: Jan: 11h. Feb: 11h. Mar: 9h. Apr: 8h. May: 7h. Jun: 6h. Jul: 7h. Aug: 8h. Sep: 9h. Oct: 10h. Nov: 11h. Dec: 11h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 7. Feb: UV 7. Mar: UV 6. Apr: UV 4. May: UV 3. 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 has remained broadly steady.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Feb 2025 · 22°C | Feb · 22°C |
| Coldest month | Aug 2025 · 4°C | Aug · 6°C |
| Wettest month | Apr 2025 · 116 mm | Dec · 110 mm |
| Windiest month | Oct 2025 · 35 km/h | Sep · 29 km/h |
Month-by-Month Weather Table
January best
Excellent 
February best
Excellent March best
Good April
Good May
Fair June
Fair July
Fair August
Fair September
Fair October
Fair November
Good December best
Excellent | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January best | 21°C / 14°C | 22°C / 12°C | 9days (66 mm) Wet | 11.4h Excellent | 79% Humid | 7.4 Very High | Excellent | View Details |
| February best | 22°C / 13°C | 21°C / 12°C | 8days (79 mm) Wet | 10.8h Excellent | 78% Humid | 7.3 Very High | Excellent | View Details |
| March best | 19°C / 12°C | 18°C / 11°C | 9days (75 mm) Wet | 9.3h Good | 80% Humid | 5.8 High | Good | View Details |
| April | 17°C / 10°C | 15°C / 8°C | 10days (79 mm) Wet | 8.4h Good | 83% Humid | 3.9 Moderate | Good | View Details |
| May | 15°C / 8°C | 12°C / 6°C | 11days (69 mm) Wet | 7.1h Good | 85% Humid | 2.6 Moderate | Fair | View Details |
| June | 13°C / 7°C | 10°C / 4°C | 12days (83 mm) Wet | 6.2h Fair | 88% Very Muggy | 1.9 Low | Fair | View Details |
| July | 12°C / 6°C | 9°C / 2°C | 14days (92 mm) Wet | 6.7h Fair | 86% Very Muggy | 2.1 Moderate | Fair | View Details |
| August | 12°C / 6°C | 9°C / 2°C | 14days (85 mm) Wet | 7.8h Good | 85% Humid | 3 Moderate | Fair | View Details |
| September | 14°C / 7°C | 11°C / 4°C | 14days (90 mm) Wet | 8.8h Good | 83% Humid | 4.5 Moderate | Fair | View Details |
| October | 16°C / 9°C | 14°C / 6°C | 13days (82 mm) Wet | 10.2h Excellent | 82% Humid | 6 High | Fair | View Details |
| November | 18°C / 11°C | 17°C / 8°C | 13days (97 mm) Wet | 11h Excellent | 81% Humid | 6.8 High | Good | View Details |
| December best | 20°C / 13°C | 20°C / 11°C | 13days (110 mm) Wet | 11.3h Excellent | 80% Humid | 7.5 Very High | Excellent | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Masterton are January, February, March, December, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Masterton, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Masterton is February, with average daytime highs of 22°C (71°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Masterton is August, with average overnight lows of 6°C (42°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Masterton is December, averaging 110mm of precipitation across 13 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Masterton runs through July, August, September, October, with the heaviest rainfall in July. Based on 10-year averages for Masterton.
Masterton receives approximately 109 sunshine hours per year. The sunniest month is January with around 11 hours. Based on climate data for Masterton.
The least favorable months to visit Masterton are June, July, August, September, primarily due to frequent rain. For the best conditions, consider January, February, March, December instead.
The annual average UV index in Masterton is 5, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Masterton is 83%, classified as humid. High humidity makes warm temperatures feel significantly hotter — lightweight, breathable clothing is recommended.
Masterton rarely sees significant snowfall but does experience frost, averaging 2 frost days during the colder months.
Average wind speeds in Masterton are 25 km/h (16 mph). The windiest month is September with peak winds reaching 29 km/h (18 mph) (gusts up to 57 km/h / 35 mph).
Masterton averages 2 clear-sky days per month with overall cloud cover around 63%. The clearest skies occur in February.
The annual average dew point in Masterton is 10°C (50°F), which feels pleasant with low humidity. Outdoor activities are comfortable year-round from a humidity standpoint.
Masterton 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 Masterton ranges from 7°C (45°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 Masterton, with a climate score of 4.9/10. Consider visiting during January, February, March, December instead for better conditions.
For June in Masterton, pack Layered clothing, Light jacket, Umbrella, Waterproof jacket, Comfortable walking shoes. With average highs of 13°C (55°F) and 12 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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