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New Zealand weather

Weather in Blenheim for January 2026

Your guide to Blenheim weather in January - trends and predictions

    Temperatures

  • In general, the average temperature in Blenheim at the beginning of January is 18.1 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 20.7 °C by the end of January.

    • Rain 🌧️

  • The climate of Blenheim in January is notably wet, with an average of 15 rainy days, and a total of 67.6 mm of precipitation.

Average dry days
16
Dry days
Average rainy days
15
Rainy days
Average snowy days
0
Snow days
Average temperatures
19°/12°
Temperatures
Average wind speed
20 km/h
Avg max wind
Average humidity
74 %
Avg humidity

Blenheim Weather January

Move between months or click on a day
December
February
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Overcast
18°
2
Sunny
19°
3
Patchy rain possible
19°
4
Patchy rain possible
19°
5
Light rain shower
17°
6
Moderate or heavy rain shower
16°
7
Moderate or heavy rain shower
19°
8
Cloudy
19°
9
Sunny
20°
10
Overcast
20°
11
Patchy rain possible
20°
12
Overcast
20°
13
Patchy rain possible
20°
14
Patchy rain possible
20°
15
Patchy rain possible
20°
16
Patchy rain possible
20°
17
Cloudy
20°
18
Patchy rain possible
20°
19
Patchy rain possible
20°
20
Overcast
21°
21
Patchy rain possible
22°
22
Patchy rain possible
22°
23
Patchy rain possible
21°
24
Overcast
18°
25
Patchy rain possible
20°
26
Moderate rain at times
21°
27
Patchy rain possible
20°
28
Partly cloudy
20°
29
Heavy rain at times
22°
30
Heavy rain at times
20°
31
Cloudy
22°

Temperatures trend during January in Blenheim

See the weather trend as well as the moving average line

January weather in Blenheim day by day

Click on a date for more information
December February
Date Weather Temperatures Rain UV More
1 Jan. Overcast
Overcast
 18° /9° 4.4 mm 5
2 Jan. Sunny
Sunny
 19° /9° 0.3 mm 6
3 Jan. Patchy rain possible
Patchy rain possible
 19° /11° 1.7 mm 5
4 Jan. Patchy rain possible
Patchy rain possible
 19° /11° 2.5 mm 6
5 Jan. Light rain shower
Light rain shower
 17° /12° 14.6 mm 6
6 Jan. Moderate or heavy rain shower
Moderate or heavy rain shower
 16° /13° 10.9 mm 6
7 Jan. Moderate or heavy rain shower
Moderate or heavy rain shower
 19° /12° 6.5 mm 7
8 Jan. Cloudy
Cloudy
 19° /11° 2.9 mm 7
9 Jan. Sunny
Sunny
 20° /10° 0 mm 7
10 Jan. Overcast
Overcast
 20° /11° 0 mm 7
11 Jan. Patchy rain possible
Patchy rain possible
 20° /12° 1.2 mm 7
12 Jan. Overcast
Overcast
 20° /11° 0.8 mm 7
13 Jan. Patchy rain possible
Patchy rain possible
 20° /11° 1.1 mm 7
14 Jan. Patchy rain possible
Patchy rain possible
 20° /11° 0.3 mm 7
15 Jan. Patchy rain possible
Patchy rain possible
 20° /11° 0.1 mm 7
16 Jan. Patchy rain possible
Patchy rain possible
 20° /11° 0.1 mm 7
17 Jan. Cloudy
Cloudy
 20° /12° 0 mm 7
18 Jan. Patchy rain possible
Patchy rain possible
 20° /12° 1.9 mm 7
19 Jan. Patchy rain possible
Patchy rain possible
 20° /13° 0.7 mm 7
20 Jan. Overcast
Overcast
 21° /13° 0.8 mm 7
21 Jan. Patchy rain possible
Patchy rain possible
 22° /13° 0.8 mm 7
22 Jan. Patchy rain possible
Patchy rain possible
 22° /14° 0.7 mm 7
23 Jan. Patchy rain possible
Patchy rain possible
 21° /12° 1 mm 7
24 Jan. Overcast
Overcast
 18° /11° 0.3 mm 7
25 Jan. Patchy rain possible
Patchy rain possible
 20° /11° 0.8 mm 6
26 Jan. Moderate rain at times
Moderate rain at times
 21° /11° 1.8 mm 7
27 Jan. Patchy rain possible
Patchy rain possible
 20° /11° 3.8 mm 7
28 Jan. Partly cloudy
Partly cloudy
 20° /11° 0 mm 7
29 Jan. Heavy rain at times
Heavy rain at times
 22° /12° 2.7 mm 7
30 Jan. Heavy rain at times
Heavy rain at times
 20° /14° 4.8 mm 7
31 Jan. Cloudy
Cloudy
 22° /14° 0.2 mm 7
Next
Important Notice
Our weather forecast for Blenheim in January is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Blenheim forecast closer to your planned date for the most up-to-date weather information.
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Blenheim in January - FAQ

What are the expected maximum and minimum temperatures in Blenheim during January?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Blenheim during January?
Moderate rainfall is anticipated in Blenheim during January, with a total of 67.6 mm spread over approximately 15 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Blenheim during January?
The average wind speed in Blenheim during January is 20 km/h, suggesting breezy to windy conditions, depending on your activities.

January rainfall patterns in Blenheim

Explore the daily rainfall trends and prepare for Blenheims January weather 💧

UV exposure in Blenheim during January

Stay informed about UV levels for safe outdoor activities throughout the month of January ☀️

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Location coordinates Where is Blenheim?

Get accurate weather forecasts for Blenheim, located at latitude -41.516 and longitude 173.953. Stay updated with localized weather information tailored for Blenheim.

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