AI-generatedBlenheim at a glance
- Best time
- Nov – Apr
- Warmest month
- Jan · 23°
- Sunshine a year
- 2,270 h
- Rain a year
- 828 mm
- Climate
- Maritime
- Time zone
- UTC+13 / UTC+12
- Elevation
- 9 m
Climate in Blenheim
Blenheim has a maritime climate with moderate summers and cool, often grey winters. January is the warmest month with average highs of 23 °C, while July is the coolest at 13 °C. With around 2,270 hours of sunshine a year, Blenheim is sunny; January is the sunniest month with 7.8 hours a day.
Holiday weather through the year
Best time to visit Blenheim
The best time to visit Blenheim is from November to April. For sightseeing, day trips and hiking, conditions are most comfortable from September to May. The wettest month is July with 84 mm of precipitation.
Blenheim through the seasons
How the weather changes over the seasons, with averages for each.
Blenheim in spring
Sep – Nov
Good
- 16–19 °C by day
- 6.7 h of sun a day
- 31 rainy days in all
Blenheim in summer
Dec – Feb
Excellent
- 22–23 °C by day
- 7.7 h of sun a day
- 24 rainy days in all
Blenheim in autumn
Mar – May
Good
- 16–21 °C by day
- 5.9 h of sun a day
- 24 rainy days in all
Blenheim in winter
Jun – Aug
Fair
- 13–14 °C by day
- 4.6 h of sun a day
- 31 rainy days in all
Which month for what?
Beach & swimming
No sea nearby
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Sep – May
15–28 °C and not too much rain
Find your perfect month
Tell us what you like and we rate every month in Blenheim for you.
Your best months: January – March
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Good
Best time to visit: November – April
Good forSightseeing & walks
A typical day in October
- Morning, 08:00: about 10°
- Midday, 13:00: about 17°
- Afternoon, 16:00: about 17°
- Evening, 20:00: about 14°
- Night, 23:00: about 11°
06:3619:44
Cool evenings: pack a jumper or a jacket.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 06:18–07:13 · evening 19:07–20:01
- Blue hour
- Morning 06:07–06:18 · evening 20:01–20:12
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
October in Blenheim compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs rise from about 17° at the start of the month to 18° at the end. The days get 1.3 h longer.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 17° | 18° |
| Night-time low | 7° | 9° |
| Daylight | 12.5 h | 13.8 h |
What is the weather like in Blenheim in October?
In October, Blenheim is mild: daytime highs average 18 °C, and nights cool down to about 8 °C. The sun shines for around 6.8 hours a day. Rain is frequent, with about 12 rainy days and 82 mm in total. All in all, October is a good month for a holiday in Blenheim.
More details for October
- Daylight
- 13 h 8 min06:36 – 19:44
- UV index
- 7 · highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 23 km/haverage daily peakAll months
- Cloud cover
- 56 %on averageAll months
- Hot days
- 0 days30 °C or more
- Time zone
- UTC+13offset from UTC
How the score comes together
- Temperatureweight 50 %95 %
- Sunshineweight 20 %63 %
- Few rainy daysweight 30 %46 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
Compare two months in Blenheim
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
February has the better holiday weather in Blenheim: score 91 against 74. In February, days are 5 °C warmer than in October. February has 6 fewer rainy days. The sun shines an hour longer a day in February.
| Month | October | February |
|---|---|---|
| Holiday weather score | 74 | 91better |
| Daytime high | 18° | 23° |
| Night-time low | 8° | 13° |
| Sunshine | 6.8 h | 7.8 hbetter |
| Rainy days | 12 | 6better |
| Rainfall | 82 mm | 53 mmbetter |
Based on the climate averages 1996–2025.
Blenheim month by month
The typical weather for every month at a glance.
88January23° · 7.8 h
In January, Blenheim is warm: daytime highs average 23 °C, and nights cool down to about 13 °C. The sun shines for around 7.8 hours a day. Rain falls on about 8 days, adding up to 55 mm. All in all, January is an excellent month for a holiday in Blenheim.
Blenheim in January91February23° · 7.8 h
In February, Blenheim is warm: daytime highs average 23 °C, and nights cool down to about 13 °C. The sun shines for around 7.8 hours a day. Rain falls on about 6 days, adding up to 53 mm. All in all, February is an excellent month for a holiday in Blenheim.
Blenheim in February88March21° · 7.1 h
In March, Blenheim is warm: daytime highs average 21 °C, and nights cool down to about 12 °C. The sun shines for around 7.1 hours a day. Rain falls on about 7 days, adding up to 52 mm. All in all, March is an excellent month for a holiday in Blenheim.
Blenheim in March79April18° · 5.7 h
In April, Blenheim is mild: daytime highs average 18 °C, and nights cool down to about 9 °C. Expect around 5.7 hours of sunshine a day. Rain falls on about 9 days, adding up to 71 mm. All in all, April is a good month for a holiday in Blenheim.
Blenheim in April66May16° · 4.8 h
In May, Blenheim is cool: daytime highs average 16 °C, and nights cool down to about 7 °C. Expect around 4.8 hours of sunshine a day. Rain falls on about 8 days, adding up to 66 mm. All in all, May is a good month for a holiday in Blenheim.
Blenheim in May45June13° · 3.9 h
In June, Blenheim is cool: daytime highs average 13 °C, and nights cool down to about 5 °C. The sun is scarce, with only about 3.9 hours a day. Rain is frequent, with about 10 rainy days and 83 mm in total. All in all, June is a so-so month for a holiday in Blenheim.
Blenheim in June44July13° · 4.4 h
In July, Blenheim is cool: daytime highs average 13 °C, and nights cool down to about 4 °C. Expect around 4.4 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 84 mm in total. All in all, July is a so-so month for a holiday in Blenheim.
Blenheim in July52August14° · 5.4 h
In August, Blenheim is cool: daytime highs average 14 °C, and nights cool down to about 4 °C. Expect around 5.4 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 75 mm in total. All in all, August is a so-so month for a holiday in Blenheim.
Blenheim in August65September16° · 5.9 h
In September, Blenheim is cool: daytime highs average 16 °C, and nights cool down to about 6 °C. Expect around 5.9 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 65 mm in total. All in all, September is a good month for a holiday in Blenheim.
Blenheim in September74October18° · 6.8 h
In October, Blenheim is mild: daytime highs average 18 °C, and nights cool down to about 8 °C. The sun shines for around 6.8 hours a day. Rain is frequent, with about 12 rainy days and 82 mm in total. All in all, October is a good month for a holiday in Blenheim.
Blenheim in October82November19° · 7.4 h
In November, Blenheim is mild: daytime highs average 19 °C, and nights cool down to about 10 °C. The sun shines for around 7.4 hours a day. Rain is frequent, with about 10 rainy days and 69 mm in total. All in all, November is an excellent month for a holiday in Blenheim.
Blenheim in November82December22° · 7.5 h
In December, Blenheim is warm: daytime highs average 22 °C, and nights cool down to about 12 °C. The sun shines for around 7.5 hours a day. Rain is frequent, with about 10 rainy days and 74 mm in total. All in all, December is an excellent month for a holiday in Blenheim.
Blenheim in DecemberClimate in detail
Year & climate table
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Blenheim
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Cold 0–8°
- Cool 8–15°
CoolOctober: nights around 8°. A duvet at night and a jumper for the evening.
The coolest nights are in July (4°), the warmest in January (13°). Nights fall below 8 °C on average from May to September, so the room should be heated.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|
| JanuaryJan | 88 | 23° | 13° | 7.8 h | 8 | 55 |
| FebruaryFeb | 91 | 23° | 13° | 7.8 h | 6 | 53 |
| MarchMar | 88 | 21° | 12° | 7.1 h | 7 | 52 |
| AprilApr | 79 | 18° | 9° | 5.7 h | 9 | 71 |
| MayMay | 66 | 16° | 7° | 4.8 h | 8 | 66 |
| JuneJun | 45 | 13° | 5° | 3.9 h | 10 | 83 |
| JulyJul | 44 | 13° | 4° | 4.4 h | 10 | 84 |
| AugustAug | 52 | 14° | 4° | 5.4 h | 11 | 75 |
| SeptemberSep | 65 | 16° | 6° | 5.9 h | 10 | 65 |
| OctoberOct | 74 | 18° | 8° | 6.8 h | 12 | 82 |
| NovemberNov | 82 | 19° | 10° | 7.4 h | 10 | 69 |
| DecemberDec | 82 | 22° | 12° | 7.5 h | 10 | 74 |
Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
41.52° S, 173.95° E · 9 m · Pacific/Auckland
Sunshine
Sunshine hours in Blenheim
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 6.8 of 13.1 hours of daylight in Blenheim, 52 % of the daylight hours.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
Rain
Rain in Blenheim: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Blenheim has about 12 rainy days with 82 mm of rain in total.
UV index
UV index in Blenheim
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 7 · highSeek shade around midday; sunscreen SPF 30+, hat and sunglasses.
The sun is strongest in December (UV 9).
Minutes until sunburn in October
- Very fair skin
- about 20 min
- Fair skin
- about 25 min
- Light brown skin
- about 35 min
- Olive skin
- about 45 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen the time, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Wind & clouds
Wind and clouds in Blenheim
How breezy and how cloudy Blenheim is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Blenheim typically peaks at 23 km/h during the day: Beaufort 4, moderate breeze.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 56 % of the sky over Blenheim: variable cloud, with about 6.8 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Planning a trip to Blenheim
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Blenheim in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Blenheim has its best school-holiday weather during the Christmas holidays (score 85) and its weakest during the summer holidays (score 49).
- 82
Easter holidays
Mar – Apr
Excellent
- 19 °C by day
- 6.1 h of sun a day
- 8 rainy days a month
Good for: Sightseeing & walks
- 62
May half-term
May – Jun
Good
- 15 °C by day
- 4.6 h of sun a day
- 9 rainy days a month
Good for: Sightseeing & walks
- 49
Summer holidays
Jul – Aug
Fair
- 13 °C by day
- 5.1 h of sun a day
- 10 rainy days a month
- 74
October half-term
Oct
Good
- 18 °C by day
- 6.8 h of sun a day
- 12 rainy days a month
Good for: Sightseeing & walks
- 85
Christmas holidays
Dec – Jan
ExcellentBest holidays
- 22 °C by day
- 7.7 h of sun a day
- 9 rainy days a month
Good for: Sightseeing & walks
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 23 h 10 min
- Distance
- 18,830 km
- Time zone
- UTC+13
- Jet lag
- About 12 days (12 h east)
Rule of thumb for flying east: for a few days before, go to bed and get up a little earlier, and get plenty of morning light at your destination.
Most routes need a change of planes, which adds time.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Good to know: New Zealand
- Currency
- New Zealand Dollar (NZD)
- Languages
- English, Māori
- Sockets
- Type I · 230 V
- Traffic
- Drives on the left
- Dialling code
- +64
- Emergency number
- 111
UK plugs need a travel adapter
Sources: GeoNames (CC BY 4.0) and Wikidata (CC0). Please check details before you travel.
Compare & alternatives
Compare with another place
Blenheim compared
Put Blenheim side by side with another destination.
Blenheim vs Picton
In October Blenheim has the better holiday weather (score 74 vs 66). During the day Picton is 2 °C cooler than Blenheim.
| in October | Blenheim | Picton |
|---|---|---|
| Holiday weather score | 74 | 66 |
| Daytime high | 18° | 16° |
| Sea | no sea nearby | 13° |
| Sunshine | 7 h | 7 h |
| Rainy days | 12 | 12 |
| Best time | Nov – Apr | Jan – Feb |
Through the year
Best places in the country
New Zealand in October: the best places
In October, Blenheim ranks 2 among the 31 nearest destinations in this country.
- Hastings19°83
- 2BlenheimThis page18°74
- 3Christchurch17°73
- 4Tauranga18°16°73
- 5Auckland18°16°72
- 6Matamata18°69
- 7Hamilton18°67
- 8Rotorua17°65
Places nearby
Near Blenheim
Other destinations close by.
Places with a similar climate
Places with a climate like Blenheim
Destinations whose weather through the year is closest to Blenheim's – good alternatives.
Frequently asked questions about Blenheim
When is the best time to visit Blenheim?
The best time to visit Blenheim is from November to April. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
What is the warmest month in Blenheim?
January is the warmest month, with average highs of 23 °C and nights around 13 °C. July is the coolest month at 13 °C.
When does it rain most in Blenheim?
The wettest month is July with 84 mm of precipitation. The driest month is March with 52 mm.
How many hours of sunshine does Blenheim get?
Blenheim gets around 2,270 hours of sunshine a year. The sunniest month is January with 7.8 hours a day; in June there are 3.9 hours a day.
What time zone is Blenheim in?
Blenheim is on UTC+13 in January and UTC+12 in July.
How long is the flight from London to Blenheim?
A nonstop flight from London to Blenheim takes about 23 h 10 min, for a straight-line distance of about 18,830 km. Most routes need a change of planes, which adds time.
Which school holidays are best for Blenheim?
Blenheim has its best school-holiday weather during the Christmas holidays (score 85) and its weakest during the summer holidays (score 49). Holiday ratings (0–100): Easter holidays 82, May half-term 62, summer holidays 49, October half-term 74, Christmas holidays 85.