The best times to visit Blenheim for ideal weather are

November 19th to April 15th

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.

 

 


Other Blenheim Travel Info

Weather in Blenheim

Temperature

Average temperatures in Blenheim vary little. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a low chance of precipitation most of the year. The area is somewhat temperate — in the 54th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Blenheim, the hottest months are February, January, and then March. See average monthly temperatures below. The warmest time of year is generally mid February where highs are regularly around 66.2°F (19°C) with temperatures rarely dropping below 57.6°F (14.2°C) at night.

Blenheim Temperatures (Fahrenheit)

Key
High
Average
Low

Blenheim Temperatures (Celsius)

Key
High
Average
Low

“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

Blenheim Perceived Temperature (F)

Key
High
Average
Low

Blenheim Perceived Temperature (C)

Key
High
Average
Low

 

Average Blenheim Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 65.3 60.6 56.4
Feb 65.4 60.8 56.9
Mar 64.1 59.8 55.6
Apr 60.8 56.7 52.6
May 57.3 53.4 49.3
Jun 54.1 50.1 45.7
Jul 52.2 48.6 44.6
Aug 53.6 49.7 45.8
Sep 55.3 51.1 46.8
Oct 58 53.1 48.2
Nov 60.6 55.6 51.1
Dec 63.4 58.8 54.8

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 18.5 15.9 13.6
Feb 18.6 16 13.8
Mar 17.8 15.4 13.1
Apr 16 13.7 11.4
May 14.1 11.9 9.6
Jun 12.3 10.1 7.6
Jul 11.2 9.2 7
Aug 12 9.8 7.7
Sep 12.9 10.6 8.2
Oct 14.4 11.7 9
Nov 15.9 13.1 10.6
Dec 17.4 14.9 12.7

 


 

Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Blenheim are February, January, and then March. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around late March. For example, on the week of March 26th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in mid August with an average of 2 days of significant precipitation the week of August 13th.

When can you find snow in Blenheim? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in Blenheim.

Key
Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Blenheim (in).

Key
Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 7% 0 1.4
Feb 6% 0 0.7
Mar 10% 0 1.2
Apr 16% 0 2.4
May 14% 0 2
Jun 19% 0 2.4
Jul 15% 0 2.3
Aug 15% 0 1.8
Sep 14% 0 1.7
Oct 14% 0 1.2
Nov 10% 0 0.9
Dec 11% 0 1.3

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 7 0 3.6
Feb 6 0 1.8
Mar 10 0 3
Apr 16 0 6.1
May 14 0 5.1
Jun 19 0 6.1
Jul 15 0 5.8
Aug 15 0 4.6
Sep 14 0 4.3
Oct 14 0 3
Nov 10 0 2.3
Dec 11 0 3.3

 

Humidity and Wind

Blenheim has some very humid months, and above average humidity throughout the year. The least humid month is October (70% relative humidity), and the most humid month is February (75.8%).

Wind in Blenheim is usually stronger than many places. The windiest month is October, followed by November and January. October’s average wind speed of around 16.7 knots (19.2 MPH or 31 KPH) is considered “a moderate breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early October where average top sustained speeds reach 27.2 knots, which is considered a strong breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Blenheim.

Key
Avg. Relative Humidity

Wind

The graph below shows wind speed (max and average) in knots.

Key
Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 16.3 Significant breeze 24.2 Very strong breeze
Feb 14.1 Significant breeze 21.3 Strong breeze
Mar 15.1 Significant breeze 22.5 Very strong breeze
Apr 14.7 Significant breeze 21.9 Strong breeze
May 14.4 Significant breeze 22.3 Very strong breeze
Jun 14.3 Significant breeze 22 Very strong breeze
Jul 14.5 Significant breeze 21.8 Very strong breeze
Aug 13.6 Significant breeze 20.6 Strong breeze
Sep 16.1 Significant breeze 23.8 Very strong breeze
Oct 16.7 Significant breeze 25.6 Very strong breeze
Nov 16.3 Significant breeze 24.3 Very strong breeze
Dec 16 Significant breeze 23.2 Very strong breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 74.7%
Feb 75.8%
Mar 73%
Apr 74%
May 71.1%
Jun 71%
Jul 70.4%
Aug 72.6%
Sep 71.1%
Oct 70%
Nov 71.2%
Dec 75.6%

 

Is it Safe to Travel to Blenheim?

Our best data indicates this area is generally safe. As of Dec 04, 2023 there are no travel advisories or warnings for New Zealand; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Oct 26, 2023.


 

The Busiest and Least Crowded Months

The busiest month for tourism in Blenheim, New Zealand is March, followed by July and June. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Blenheim in November. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month

 

Most Popular Months to Visit

Key
Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 56.6 in November means 56.6% of the tourists vs. March.

 

 

Overall Blenheim Travel Experience by Season

Fall (March through May)

Humidity and temperatures combine to make this season feel moderate. Highs range from 65°F (18.3°C) and 55.2°F (12.9°C) with colder temperatures in the later months. Rain is somewhat common with 3 to 5 days of significant precipitation per month. Fall is the second busiest for tourism, which makes it a good time for those looking for things to do.

Winter (June through August)

The middle-year months have cold weather with high temperatures that are still jacket weather. These months see the most precipitation with 5 to 6 days of precipitation per month. June – August is the busiest season for tourism in Blenheim, so lodging and other accommodations may cost more than usual.

Spring (September through November)

Spring daily highs range from 63.1°F (17.3°C) and 54.3°F (12.4°C), which will feel chilly given the humidity and wind. It rains or snows a normal amount: 3 to 4 days per month. Tourism is fairly slow during these months due to the weather, so hotels may be lower priced.

Summer (December through February)

Weather is somewhat cool this time of year in Blenheim to be enjoyable for warm weather travelers. The average high during this season is between 66.2°F (19°C) and 62°F (16.7°C). On average, it rains or snows a smalll amount: 2 to 3 times per month. These times of year are the slowest with tourists.

 

Best Times to Travel› New Zealand › Blenheim, New Zealand