Masterton weather in January

In January, Masterton sees average daytime highs of 20°C and overnight lows near 12°C, with 68 mm of rain across 10.4 wet days and about 14.6 hours of daylight. It is the 2nd-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 20°C through the month. The sky is clear or mostly clear about 29% of the time in January, and the air most often feels dry.

Daylight stretches from about 14 h 54 min at the start of January to 14 h 12 min by month's end. Set against the rest of the year, January is Masterton's 3rd-clearest and 5th-windiest month. For the whole year in context, see Masterton's year-round climate.

Daytime high
20°
2nd warmest
Overnight low
12°
11th coldest
Rainfall
68 mm
10.4 wet days
Daylight
14 h 36 min
6:08 AM – 8:46 PM
Cloud cover
59%
3rd clearest
Wind
17 km/h
5th windiest
Solar energy
6.99 kWh/m²
Travel score
6.2
out of 10

Masterton is town in Wellington Region, New Zealand.

Air quality
Moderate
PM2.5 11.7 µg/m³ · 2012
Founded
1854

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 20°C through the month.

A typical January day in Masterton reaches about 20°C in the afternoon and slips back to 12°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 23°C. Set against its neighbours, January runs about 2°C warmer than December and on par with February.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
11912
21912
31912
41912
51912
61912
71912
81912
91912
101912
112012
122012
132012
142012
152012
162012
172012
182012
192012
202013
212013
222013
232013
242013
252013
262013
272013
282013
292013
302013
312013

Masterton weather by month

How January compares with the rest of the year at a glance. January is the 2nd-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan20° / 12°6810.414.66.2
Feb20° / 13°678.513.66.4
Mar19° / 11°678.812.36.2
Apr16° / 759.910.95.0
May14° / 6210.59.74.0
Jun12° / 8312.29.12.8
Jul11° / 9113.19.42.4
Aug11° / 8113.410.42.7
Sep13° / 8112.911.73.3
Oct14° / 9512.813.14.0
Nov16° / 8512.114.34.7
Dec18° / 11°8411.414.95.6

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 17% of January, with mostly cloudy or overcast conditions the remaining 55%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14654
24555
34555
44555
54555
64654
74654
84654
94654
104753
114654
124654
134753
144654
154555
164654
174654
184654
194654
204555
214456
224555
234555
244555
254456
264456
274456
284456
294456
304456
314555

Chance of precipitation in January

Any precipitation

Masterton gets around 68 mm of rain over 10.4 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 34% and peaks near 35% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
235
335
435
535
635
735
835
935
1035
1135
1235
1335
1435
1535
1635
1734
1834
1934
2034
2134
2234
2333
2433
2533
2633
2733
2833
2932
3032
3131

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

Most of January feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, January lands in the dry band about 60% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
167294
266304
365305
465305
565305
664306
764306
864306
964306
1062317
1162317
1262317
1362317
1461327
1561327
1660328
1759338
1859338
1958339
2058339
2158339
22573310
23573310
24553411
25553411
26543412
27543412
28543412
29543313
30543313
31543313

Wind in January

Winds average 17 km/h in January.

Across January, daily wind ranges from about 16 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
117light breeze
217light breeze
317light breeze
417light breeze
517light breeze
617light breeze
717light breeze
817light breeze
917light breeze
1017light breeze
1117light breeze
1217light breeze
1317light breeze
1417light breeze
1517light breeze
1617light breeze
1717light breeze
1817light breeze
1917light breeze
2017light breeze
2116light breeze
2216light breeze
2316light breeze
2416light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3016light breeze
3116light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 14 h 54 min at the start of January to 14 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 42 minutes over January. Sunrise moves from 5:54 AM to 6:25 AM, and sunset from 8:47 PM to 8:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.95:548:47
214.95:548:48
314.95:558:48
414.95:568:48
514.85:578:48
614.85:588:48
714.85:598:48
814.86:008:48
914.86:008:48
1014.86:018:47
1114.76:028:47
1214.76:038:47
1314.76:048:47
1414.76:058:46
1514.76:068:46
1614.66:088:46
1714.66:098:45
1814.66:108:45
1914.66:118:45
2014.56:128:44
2114.56:138:44
2214.56:148:43
2314.56:158:42
2414.46:168:42
2514.46:188:41
2614.46:198:40
2714.36:208:40
2814.36:218:39
2914.36:228:38
3014.26:248:37
3114.26:258:37

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 6.99 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 1.58 kWh/m² to a high of 6.99 kWh/m² in January across the year — January's 6.99 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.3Intense
27.3Intense
37.3Intense
47.3Intense
57.3Intense
67.2Intense
77.2Intense
87.1Intense
97.1Intense
107.0Intense
116.9Intense
126.9Intense
136.8Intense
146.8Intense
156.7Intense
166.7Intense
176.7Intense
186.6Intense
196.6Intense
206.6Intense
216.5Intense
226.5Intense
236.5Intense
246.5Intense
256.5Intense
266.4Intense
276.4Intense
286.4Intense
296.4Intense
306.3Intense
316.3Intense
Planning a trip in January

Is January a good time to visit Masterton?

Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.2
Sightseeing
2nd-best month of the year
3.1
Beach & pool
2nd-best month of the year

January is a reasonable time to visit Masterton for sightseeing.

What to pack for Masterton in January

From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In January, Masterton sees daytime highs around 20°C and nights near 12°C. Pack sun protection. Worth having: rain gear. About 10 days see rain.

sun protectionrain gear

Sea temperature near Masterton in January

The nearest coast averages about 17°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 43 km away) is warmest in February at about 18°C and coldest in August near 12°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

10°12°14°16°18°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan17Cool
Feb18Cool
Mar17Cool
Apr16Cool
May15Bracing
Jun14Bracing
Jul13Bracing
Aug12Bracing
Sep13Bracing
Oct13Bracing
Nov14Bracing
Dec16Cool

UV index in Masterton in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Masterton peaks around January 12 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 17 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeModerateLowModerateHighVery highExtremeJan 12UV 11Jun 17UV 2
UV index (midday)Level
Jan11Extreme
Feb11Extreme
Mar6High
Apr4Moderate
May2Moderate
Jun2Low
Jul2Low
Aug3Moderate
Sep4Moderate
Oct6High
Nov10Very high
Dec11Extreme
Location & terrain

Where is Masterton?

Masterton sits at 41.0°S, 175.7°E, 103 m above sea level, in New Zealand. The nearest listed city is Levin, 49 km away.

Topography around Masterton

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Masterton.

Within 3 km, the terrain around Masterton has only modest variations in elevation — a maximum elevation change of 70 m around an average of 108 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 673 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,511 m.

The land around Masterton is covered by grassland (51%) and artificial surfaces (24%) within 3 km, grassland (78%) within 16 km, and grassland (38%), water (35%) and trees (26%) within 80 km.

3 km
70 m
16 km
673 m
80 km
1,511 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Levin 49 km · Paraparaumu 54 km · Upper Hutt 55 km · Palmerston North 67 km · Lower Hutt 68 km · Wainuiomata 68 km · Porirua 70 km · Wellington 82 km

New Zealand travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type I
230 V · 50 Hz
Prices
≈ 86% of US
price level, 2025
GDP per capita
$49,591
2025
Happiness
7.0 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
1.5
per 100k, 2022
Road deaths
9.6
per 100k/yr, 2019
Income group
High
World Bank
Religion
no religion 49%Christian 37%objected to answering 7%Hindu 3%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Masterton (-40.9597°, 175.6575°, elevation 103 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).