easeweather.com
Blenheim
Auckland
Blenheim
ChristchurchCoromandelDunedinFranz JosefGisborneGreymouthHaastHamiltonHavelock NorthInvercargillLake TekapoMilford SoundMount Cook VillageNapierNelsonNew PlymouthPaihiaPictonQueenstownRotoruaTaupoTaurangaTe AnauTimaruWanakaWellingtonWhanganuiWhangarei More Locations
New Zealand weather

Weather in Blenheim for December 2026

Your guide to Blenheim weather in December - trends and predictions

    Temperatures

  • In general, the average temperature in Blenheim at the beginning of December is 16.7 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 19 °C by the end of December.

    • Rain 🌧️

  • The climate of Blenheim in December is notably wet, with an average of 11 rainy days, and a total of 84.4 mm of precipitation.

    • More

  • Is December a good time to visit Blenheim? check out the best time to travel to Blenheim page.

Average dry days
20
Dry days
Average rainy days
11
Rainy days
Average snowy days
0
Snow days
Average temperatures
18°/12°
Temperatures
Average wind speed
30 km/h
Avg max wind
Average humidity
79 %
Avg humidity

Blenheim Weather December

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

Temperatures trend during December in Blenheim

See the weather trend as well as the moving average line

December weather in Blenheim day by day

Click on a date for more information
November January
Date Weather Temperatures Rain UV More
1 Dec. Patchy rain possible
Patchy rain possible
 16° /11° 0 mm 6
2 Dec. Light drizzle
Light drizzle
 16° /12° 0.8 mm 6
3 Dec. Light rain
Light rain
 15° /12° 6.3 mm 6
4 Dec. Patchy rain possible
Patchy rain possible
 16° /13° 1.3 mm 6
5 Dec. Patchy rain possible
Patchy rain possible
 18° /12° 0 mm 6
6 Dec. Partly cloudy
Partly cloudy
 17° /12° 0 mm 7
7 Dec. Patchy rain possible
Patchy rain possible
 19° /11° 0 mm 7
8 Dec. Patchy rain possible
Patchy rain possible
 18° /12° 1.3 mm 6
9 Dec. Overcast
Overcast
 19° /12° 0.2 mm 7
10 Dec. Light drizzle
Light drizzle
 19° /12° 2 mm 7
11 Dec. Patchy rain possible
Patchy rain possible
 17° /11° 0.1 mm 6
12 Dec. Patchy rain possible
Patchy rain possible
 17° /11° 0.3 mm 6
13 Dec. Sunny
Sunny
 18° /10° 0 mm 7
14 Dec. Sunny
Sunny
 19° /11° 0 mm 7
15 Dec. Partly cloudy
Partly cloudy
 19° /13° 0.2 mm 7
16 Dec. Light rain
Light rain
 18° /13° 9.5 mm 6
17 Dec. Light rain
Light rain
 15° /11° 9 mm 5
18 Dec. Light rain shower
Light rain shower
 16° /11° 0.5 mm 6
19 Dec. Patchy rain possible
Patchy rain possible
 17° /12° 2.4 mm 6
20 Dec. Light rain
Light rain
 17° /10° 6.9 mm 6
21 Dec. Sunny
Sunny
 19° /11° 0.6 mm 7
22 Dec. Light rain
Light rain
 18° /12° 2.5 mm 6
23 Dec. Heavy rain at times
Heavy rain at times
 18° /14° 5.4 mm 6
24 Dec. Light rain
Light rain
 19° /14° 2.7 mm 7
25 Dec. Patchy rain possible
Patchy rain possible
 20° /13° 0.4 mm 7
26 Dec. Light rain
Light rain
 19° /13° 4.1 mm 6
27 Dec. Light rain
Light rain
 18° /13° 2.5 mm 7
28 Dec. Patchy rain possible
Patchy rain possible
 18° /13° 0.4 mm 7
29 Dec. Light rain
Light rain
 20° /13° 6.2 mm 7
30 Dec. Moderate rain
Moderate rain
 19° /12° 13 mm 5
31 Dec. Light rain
Light rain
 19° /12° 5.8 mm 5
Next
Important Notice
Our weather forecast for Blenheim in December 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.
Change Month
‹
›

Blenheim in December - FAQ

What are the expected maximum and minimum temperatures in Blenheim during December?
Enjoy moderate daytime temperatures of up to 18° 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 December?
Moderate rainfall is anticipated in Blenheim during December, with a total of 84.4 mm spread over approximately 11 days. Considering plans for rainy days is advisable.

What are the typical wind conditions in Blenheim during December?
The average wind speed in Blenheim during December is 30 km/h, suggesting breezy to windy conditions, depending on your activities.

December rainfall patterns in Blenheim

Explore the daily rainfall trends and prepare for Blenheims December weather 💧
Typically, Blenheim has 11 rainy days in December with a total of 84.4 mm of rainfall.
Quick links
More Blenheim weather pages
You are here
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.

Found a mistake?
We appreciate your attention to details. Tell us here.