As of 15:13 BST

Weather in Blackwater

+13°

Blackwater, Wednesday, 7 October, 15:13

Overcast. Feels like 12°C. High 14°C, low 10°C.

Pressure1012 mb

Wind15 mph N

Humidity91%

Visibility6.2 mi

Dew point11°C

Detailed hourly forecast

The month ahead in Blackwater: daytime temperatures averaging +15.3° and +9.6° overnight — that is 0.5° above the climate average for October. Rain is expected on 8 days (around 50 mm), against a normal of 7 days and 54 mm. The warmest day should be 9 October (+18.6°), the coolest 11 October (+7.2°).

+15.3°/+9.6°

Average day / night

+0.5°

Above average

8 / 7

Wet days / normal

50 mm

Rainfall this month

Ten-day blocks against the climate average

Period	Forecast (day)	Average	Difference
7 October – 16 October	+16.3°	+15.1°	+1.2°
17 October – 26 October	+13.5°	+13.9°	-0.4°
27 October – 5 November	near average	+12.9°	—

October records over 66 years

+22.5°1 October 2011All-time high

+0.2°31 October 2018All-time low

Climate averages and records are calculated from the nearest reference point — Christchurch (3.3 km away).

Thu, 08+8 ° /15 °

+15 °

Blackwater, Thursday, 8 October

Partly cloudy. High 15°C, low 8°C.

Pressure1024 mb

Wind11 mph NW

Humidity58%

Visibility6.2 mi

Dew point6°C

Fri, 09+11 ° /19 °

1.3

+19 °

Blackwater, Friday, 9 October

Light rain. High 19°C, low 11°C.

Pressure1015 mb

Wind19 mph W

Humidity75%

Visibility6.2 mi

Dew point14°C

Sat, 10+10 ° /15 °

+15 °

Blackwater, Saturday, 10 October

Mainly clear. High 15°C, low 10°C.

Pressure1014 mb

Wind12 mph W

Humidity64%

Visibility6.2 mi

Dew point7°C

Sun, 11+7 ° /14 °

+14 °

Blackwater, Sunday, 11 October

Overcast. High 14°C, low 7°C.

Pressure1015 mb

Wind6 mph W

Humidity65%

Visibility6.2 mi

Dew point7°C

Mon, 12+12 ° /18 °

5.2

+18 °

Blackwater, Monday, 12 October

Light rain. High 18°C, low 12°C.

Pressure1014 mb

Wind15 mph S

Humidity96%

Visibility—

Dew point15°C

Tue, 13+12 ° /19 °

2.8

+19 °

Blackwater, Tuesday, 13 October

Light rain. High 19°C, low 12°C.

Pressure1021 mb

Wind17 mph NW

Humidity73%

Visibility—

Dew point14°C

Wed, 14+10 ° /16 °

+16 °

Blackwater, Wednesday, 14 October

Clear sky. High 16°C, low 10°C.

Pressure1032 mb

Wind7 mph S

Humidity58%

Visibility—

Dew point7°C

Thu, 15+13 ° /18 °

+18 °

Blackwater, Thursday, 15 October

Partly cloudy. High 18°C, low 13°C.

Pressure1021 mb

Wind15 mph N

Humidity64%

Visibility—

Dew point10°C

Fri, 16+7 ° /15 °

0.5

+15 °

Blackwater, Friday, 16 October

Light rain. High 15°C, low 7°C.

Pressure1025 mb

Wind13 mph N

Humidity52%

Visibility—

Dew point4°C

Sat, 17+13 ° /17 °

4.4

+17 °

Blackwater, Saturday, 17 October

Light rain. High 17°C, low 13°C.

Pressure1012 mb

Wind12 mph S

Humidity74%

Visibility—

Dew point12°C

Sun, 18+10 ° /14 °

8.4

+14 °

Blackwater, Sunday, 18 October

Rain. High 14°C, low 10°C.

Pressure1005 mb

Wind23 mph SE

Humidity80%

Visibility—

Dew point10°C

Mon, 19+8 ° /10 °

12.3

+10 °

Blackwater, Monday, 19 October

Rain. High 10°C, low 8°C.

Pressure996 mb

Wind25 mph NW

Humidity92%

Visibility—

Dew point9°C

Tue, 20+8 ° /12 °

+12 °

Blackwater, Tuesday, 20 October

Overcast. High 12°C, low 8°C.

Pressure999 mb

Wind21 mph NW

Humidity61%

Visibility—

Dew point4°C

Wed, 21+8 ° /13 °

+13 °

Blackwater, Wednesday, 21 October

Clear sky. High 13°C, low 8°C.

Pressure1008 mb

Wind23 mph NW

Humidity56%

Visibility—

Dew point4°C

Thu, 22+7 ° /14 °

4.5

+14 °

Blackwater, Thursday, 22 October

Light rain. High 14°C, low 7°C.

Pressure1018 mb

Wind16 mph NW

Humidity85%

Visibility—

Dew point9°C

Days 17 onward are based on 60-year climate statistics

Fri, 23+10 ° /14 °

3.1

+14 °

Blackwater, Friday, 23 October

Climate average for this date — the mean of the last 60 years.

Average high14°C

Average low10°C

Average rainfall3.1 mm

Chance of rain37%

Warmest on record+18° (2011)

Coldest on record+4° (1981)

Sat, 24+10 ° /14 °

4.3

+14 °

Blackwater, Saturday, 24 October

Climate average for this date — the mean of the last 60 years.

Average high14°C

Average low10°C

Average rainfall4.3 mm

Chance of rain48%

Warmest on record+18° (1995)

Coldest on record+2° (1964)

Sun, 25+10 ° /14 °

2.9

+14 °

Blackwater, Sunday, 25 October

Climate average for this date — the mean of the last 60 years.

Average high14°C

Average low10°C

Average rainfall2.9 mm

Chance of rain43%

Warmest on record+18° (2006)

Coldest on record+3° (2010)

Mon, 26+10 ° /14 °

2.2

+14 °

Blackwater, Monday, 26 October

Climate average for this date — the mean of the last 60 years.

Average high14°C

Average low10°C

Average rainfall2.2 mm

Chance of rain38%

Warmest on record+18° (2005)

Coldest on record+4° (1981)

Tue, 27+10 ° /14 °

3.5

+14 °

Blackwater, Tuesday, 27 October

Climate average for this date — the mean of the last 60 years.

Average high14°C

Average low10°C

Average rainfall3.5 mm

Chance of rain47%

Warmest on record+19° (2022)

Coldest on record+2° (1962)

Wed, 28+10 ° /13 °

3.4

+13 °

Blackwater, Wednesday, 28 October

Climate average for this date — the mean of the last 60 years.

Average high13°C

Average low10°C

Average rainfall3.4 mm

Chance of rain45%

Warmest on record+18° (2022)

Coldest on record+3° (2008)

Thu, 29+9 ° /13 °

2.6

+13 °

Blackwater, Thursday, 29 October

Climate average for this date — the mean of the last 60 years.

Average high13°C

Average low9°C

Average rainfall2.6 mm

Chance of rain45%

Warmest on record+19° (2022)

Coldest on record+1° (2008)

Fri, 30+9 ° /13 °

2.8

+13 °

Blackwater, Friday, 30 October

Climate average for this date — the mean of the last 60 years.

Average high13°C

Average low9°C

Average rainfall2.8 mm

Chance of rain42%

Warmest on record+18° (2001)

Coldest on record+2° (1983)

Sat, 31+10 ° /13 °

4.3

+13 °

Blackwater, Saturday, 31 October

Climate average for this date — the mean of the last 60 years.

Average high13°C

Average low10°C

Average rainfall4.3 mm

Chance of rain55%

Warmest on record+19° (2014)

Coldest on record+0° (2018)

Sun, 01+9 ° /13 °

3.7

+13 °

Blackwater, Sunday, 1 November

Climate average for this date — the mean of the last 60 years.

Average high13°C

Average low9°C

Average rainfall3.7 mm

Chance of rain50%

Warmest on record+17° (2014)

Coldest on record+3° (2008)

Mon, 02+9 ° /13 °

4.6

+13 °

Blackwater, Monday, 2 November

Climate average for this date — the mean of the last 60 years.

Average high13°C

Average low9°C

Average rainfall4.6 mm

Chance of rain50%

Warmest on record+17° (2005)

Coldest on record+1° (2018)

Tue, 03+8 ° /12 °

2.9

+12 °

Blackwater, Tuesday, 3 November

Climate average for this date — the mean of the last 60 years.

Average high12°C

Average low8°C

Average rainfall2.9 mm

Chance of rain45%

Warmest on record+16° (1994)

Coldest on record+1° (1985)

Wed, 04+8 ° /12 °

3.1

+12 °

Blackwater, Wednesday, 4 November

Climate average for this date — the mean of the last 60 years.

Average high12°C

Average low8°C

Average rainfall3.1 mm

Chance of rain43%

Warmest on record+16° (2025)

Coldest on record+1° (1966)

Thu, 05+8 ° /12 °

2.8

+12 °

Blackwater, Thursday, 5 November

Climate average for this date — the mean of the last 60 years.

Average high12°C

Average low8°C

Average rainfall2.8 mm

Chance of rain37%

Warmest on record+17° (2025)

Coldest on record+1° (2021)

Questions about the month ahead

How accurate is a month-long forecast?

The first 16 days come from weather models — highly reliable for the first 3–5 days, gradually less so after that. Days 17 to 30 for Blackwater are built from climate averages over the last 60 years, so they show typical weather for those dates rather than a specific forecast.

What does "above average" mean?

We compare the forecast with the climate average for exactly the same calendar days, calculated from 60 years of observations. The difference shows how the coming month compares with a typical one.

Where do the 66-year records come from?

These are real historical extremes recorded in Blackwater since 1960: the highest and lowest temperature for each calendar date, with the year it happened.

How often is the 30-day forecast updated?

The forecast portion refreshes every hour. The climate portion is based on long-term data and stays stable.