As of 18:38 BST

Weather in Mill Bay

+12°

Mill Bay, Wednesday, 7 October, 18:38

Clear sky. Feels like 12°C. High 12°C, low 8°C.

Pressure1018 mb

Wind14 mph NW

Humidity70%

Visibility6.2 mi

Dew point7°C

Detailed hourly forecast

The month ahead in Mill Bay: daytime temperatures averaging +13.1° and +8.5° overnight — that is 0.4° above the climate average for October. Rain is expected on 11 days (around 63 mm), against a normal of 8 days and 56 mm. The warmest day should be 12 October (+17°), the coolest 20 October (+6.3°).

+13.1°/+8.5°

Average day / night

+0.4°

Above average

11 / 8

Wet days / normal

63 mm

Rainfall this month

Ten-day blocks against the climate average

Period	Forecast (day)	Average	Difference
7 October – 16 October	+14.1°	+13.1°	+1°
17 October – 26 October	+11.5°	+12.1°	-0.6°
27 October – 5 November	near average	+11.2°	—

October records over 66 years

+20.5°9 October 2023All-time high

+1°30 October 2018All-time low

Climate averages and records are calculated from the nearest reference point — Carrickfergus (12.8 km away).

Thu, 08+7 ° /15 °

7.9

+15 °

Mill Bay, Thursday, 8 October

Rain. High 15°C, low 7°C.

Pressure1022 mb

Wind9 mph W

Humidity71%

Visibility6.2 mi

Dew point7°C

Fri, 09+11 ° /15 °

4.1

+15 °

Mill Bay, Friday, 9 October

Rain. High 15°C, low 11°C.

Pressure1006 mb

Wind19 mph W

Humidity80%

Visibility6.2 mi

Dew point9°C

Sat, 10+9 ° /12 °

1.5

+12 °

Mill Bay, Saturday, 10 October

Light rain. High 12°C, low 9°C.

Pressure1006 mb

Wind23 mph W

Humidity75%

Visibility6.2 mi

Dew point7°C

Sun, 11+9 ° /13 °

0.2

+13 °

Mill Bay, Sunday, 11 October

Light rain. High 13°C, low 9°C.

Pressure1012 mb

Wind4 mph NW

Humidity78%

Visibility6.2 mi

Dew point8°C

Mon, 12+11 ° /17 °

3.8

+17 °

Mill Bay, Monday, 12 October

Light rain. High 17°C, low 11°C.

Pressure1004 mb

Wind20 mph SE

Humidity97%

Visibility—

Dew point15°C

Tue, 13+11 ° /16 °

2.6

+16 °

Mill Bay, Tuesday, 13 October

Light rain. High 16°C, low 11°C.

Pressure1018 mb

Wind20 mph SW

Humidity77%

Visibility—

Dew point9°C

Wed, 14+11 ° /15 °

+15 °

Mill Bay, Wednesday, 14 October

Overcast. High 15°C, low 11°C.

Pressure1024 mb

Wind17 mph SW

Humidity76%

Visibility—

Dew point10°C

Thu, 15+9 ° /14 °

3.6

+14 °

Mill Bay, Thursday, 15 October

Rain. High 14°C, low 9°C.

Pressure1015 mb

Wind24 mph S

Humidity72%

Visibility—

Dew point8°C

Fri, 16+8 ° /12 °

+12 °

Mill Bay, Friday, 16 October

Overcast. High 12°C, low 8°C.

Pressure1022 mb

Wind16 mph S

Humidity73%

Visibility—

Dew point6°C

Sat, 17+8 ° /11 °

3.1

+11 °

Mill Bay, Saturday, 17 October

Light rain. High 11°C, low 8°C.

Pressure1009 mb

Wind22 mph S

Humidity67%

Visibility—

Dew point4°C

Sun, 18+6 ° /13 °

9.8

+13 °

Mill Bay, Sunday, 18 October

Rain. High 13°C, low 6°C.

Pressure1007 mb

Wind35 mph SE

Humidity60%

Visibility—

Dew point3°C

Mon, 19+8 ° /12 °

6.6

+12 °

Mill Bay, Monday, 19 October

Rain. High 12°C, low 8°C.

Pressure985 mb

Wind33 mph SW

Humidity79%

Visibility—

Dew point6°C

Tue, 20+6 ° /10 °

1.1

+10 °

Mill Bay, Tuesday, 20 October

Light rain. High 10°C, low 6°C.

Pressure990 mb

Wind23 mph SW

Humidity64%

Visibility—

Dew point3°C

Wed, 21+7 ° /10 °

0.2

+10 °

Mill Bay, Wednesday, 21 October

Light rain. High 10°C, low 7°C.

Pressure1002 mb

Wind19 mph SW

Humidity74%

Visibility—

Dew point5°C

Thu, 22+7 ° /13 °

18.2

+13 °

Mill Bay, Thursday, 22 October

Rain. High 13°C, low 7°C.

Pressure1001 mb

Wind31 mph SE

Humidity78%

Visibility—

Dew point8°C

Days 17 onward are based on 60-year climate statistics

Fri, 23+9 ° /12 °

3.1

+12 °

Mill Bay, Friday, 23 October

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

Average high12°C

Average low9°C

Average rainfall3.1 mm

Chance of rain60%

Warmest on record+16° (1971)

Coldest on record+3° (1987)

Sat, 24+9 ° /12 °

4.6

+12 °

Mill Bay, Saturday, 24 October

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

Average high12°C

Average low9°C

Average rainfall4.6 mm

Chance of rain50%

Warmest on record+16° (2005)

Coldest on record+3° (1987)

Sun, 25+8 ° /12 °

3.6

+12 °

Mill Bay, Sunday, 25 October

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

Average high12°C

Average low8°C

Average rainfall3.6 mm

Chance of rain53%

Warmest on record+16° (1969)

Coldest on record+3° (2019)

Mon, 26+8 ° /12 °

3.2

+12 °

Mill Bay, Monday, 26 October

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

Average high12°C

Average low8°C

Average rainfall3.2 mm

Chance of rain53%

Warmest on record+16° (2021)

Coldest on record+4° (2019)

Tue, 27+9 ° /12 °

4.5

+12 °

Mill Bay, Tuesday, 27 October

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

Average high12°C

Average low9°C

Average rainfall4.5 mm

Chance of rain62%

Warmest on record+17° (2005)

Coldest on record+4° (1992)

Wed, 28+8 ° /12 °

4.1

+12 °

Mill Bay, Wednesday, 28 October

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

Average high12°C

Average low8°C

Average rainfall4.1 mm

Chance of rain52%

Warmest on record+16° (2009)

Coldest on record+3° (2008)

Thu, 29+8 ° /11 °

3.2

+11 °

Mill Bay, Thursday, 29 October

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

Average high11°C

Average low8°C

Average rainfall3.2 mm

Chance of rain43%

Warmest on record+15° (2005)

Coldest on record+2° (2008)

Fri, 30+8 ° /12 °

3.3

+12 °

Mill Bay, Friday, 30 October

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

Average high12°C

Average low8°C

Average rainfall3.3 mm

Chance of rain53%

Warmest on record+15° (1968)

Coldest on record+1° (2018)

Sat, 31+8 ° /12 °

4.4

+12 °

Mill Bay, Saturday, 31 October

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

Average high12°C

Average low8°C

Average rainfall4.4 mm

Chance of rain53%

Warmest on record+16° (2014)

Coldest on record+3° (1992)

Sun, 01+8 ° /11 °

4.1

+11 °

Mill Bay, Sunday, 1 November

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

Average high11°C

Average low8°C

Average rainfall4.1 mm

Chance of rain53%

Warmest on record+16° (2007)

Coldest on record+2° (2018)

Mon, 02+8 ° /11 °

3.7

+11 °

Mill Bay, Monday, 2 November

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

Average high11°C

Average low8°C

Average rainfall3.7 mm

Chance of rain58%

Warmest on record+16° (1971)

Coldest on record+2° (1986)

Tue, 03+7 ° /11 °

2.8

+11 °

Mill Bay, Tuesday, 3 November

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

Average high11°C

Average low7°C

Average rainfall2.8 mm

Chance of rain48%

Warmest on record+16° (1979)

Coldest on record+2° (1966)

Wed, 04+7 ° /11 °

2.7

+11 °

Mill Bay, Wednesday, 4 November

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

Average high11°C

Average low7°C

Average rainfall2.7 mm

Chance of rain48%

Warmest on record+15° (1978)

Coldest on record+1° (1968)

Thu, 05+7 ° /11 °

2.9

+11 °

Mill Bay, Thursday, 5 November

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

Average high11°C

Average low7°C

Average rainfall2.9 mm

Chance of rain47%

Warmest on record+16° (2025)

Coldest on record+3° (2000)

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 Mill Bay 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 Mill Bay 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.