Weather in Castlereagh

14-day forecast · updated today, Wednesday, October 28, at 9:56 pm (GMT)

Now · overcast 51 °F

Feels like: 50 °F
Low / high: 48 / 56 °F
Rain: 99% · 0.01 in
Wind: 3 mph SSW

↗ 30.21 inHg · rising

Today in Castlereagh: light rain, 48 °F to 56 °F, with a 99% chance of rain (0.01 in) and a light air from the south-southwest (3 mph). Tomorrow, overcast, 48 °F to 58 °F and a 0% chance of rain. The warmest day of the week is Saturday 31, at 58 °F. No significant rain expected over the next 7 days.

Measured now at the airport

Belfast/Harbour (EGAC), 2.8 mi away · 36 min ago

Visibility6.2 mi or more

WeatherNothing to note

Temperature52 °F

Wind8 mph from the south

It's what the airport's weather station measured, not a forecast: on the coast, wind and fog can be different. Airports report every 30 or 60 minutes.

Airport METAR report, via NOAA's Aviation Weather Center (aviationweather.gov). Sources and licenses

Temperatures for the next 14 days

56° 48°
Today
58° 48°
Thu 29
56° 54°
Fri 30
58° 53°
Sat 31
54° 46°
Sun 1
53° 41°
Mon 2
51° 40°
Tue 3
51° 46°
Wed 4
53° 47°
Thu 5
53° 47°
Fri 6
51° 40°
Sat 7
50° 35°
Sun 8
55° 50°
Mon 9
54° 52°
Tue 10

Day by day

Day	Sky	Low / high	Rain	Max wind	High tides	Model
Today · 28	Light rain	48 / 56 °F	99% · 0.01 in	17 mph SW	12:04 pm	ICON-EU
Thu 29	Overcast	48 / 58 °F	0%	13 mph SSE	12:26 am · 12:48 pm	ICON-EU
Fri 30	Light rain	54 / 56 °F	10% · 0.02 in	15 mph SSE	1:17 am · 1:37 pm	ICON-EU
Sat 31	Overcast	53 / 58 °F	12%	6 mph S	2:13 am · 2:32 pm	ICON-EU
Sun 1	Overcast	46 / 54 °F	8%	8 mph NNW	3:16 am · 3:34 pm	ICON-EU
Mon 2	Overcast	41 / 53 °F	2%	6 mph E	4:29 am · 4:45 pm	ICON-EU + ECMWF
Tue 3	Overcast	40 / 51 °F	2%	4 mph ENE	5:50 am · 6:01 pm	ECMWF
Wed 4	Overcast	46 / 51 °F	2%	8 mph E	7:08 am · 7:12 pm	ECMWF
Thu 5	Overcast	47 / 53 °F	2%	11 mph ESE	8:12 am · 8:14 pm	ECMWF
Fri 6	Overcast	47 / 53 °F	8%	16 mph ESE	9:03 am · 9:05 pm	ECMWF
Sat 7	Overcast	40 / 51 °F	10%	13 mph ESE	9:43 am · 9:48 pm	ECMWF
Sun 8	Drizzle	35 / 50 °F	18% · 0.16 in	10 mph E	10:17 am · 10:27 pm	ECMWF
Mon 9	Heavy drizzle	50 / 55 °F	21% · 0.43 in	10 mph ESE	10:48 am · 11:03 pm	ECMWF
Tue 10	Drizzle	52 / 54 °F	18% · 0.23 in	10 mph E	11:19 am · 11:39 pm	ECMWF

Each hour comes from the best model for this spot: ICON-EU until Monday 2 7:00 pm; then ECMWF until Thursday 12 3:00 pm; then GFS.

Each day comes from the best model covering this spot: regional ones first (HRRR and NBM in the U.S., AROME, ICON-EU), then ECMWF; day 16, NOAA GFS. Waves: Météo-France up to day 10, then ECMWF WAM, coarser and further offshore. High tides: our own tide calculation.

Today, every 3 hours

Time	12:00 am	3:00 am	6:00 am	9:00 am	12:00 pm	3:00 pm	6:00 pm	9:00 pm
Sky	Overcast	Overcast	Overcast	Partly cloudy	Overcast	Overcast	Overcast	Overcast
Temperature	48°	51°	52°	54°	56°	56°	53°	51°
Chance of rain	22%	94%	84%	25%	29%	0%	0%	0%
Rain	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in
Wind (mph)	13 SSW	17 SW	10 SW	14 WSW	12 WSW	9 WSW	5 SSW	3 SSW
Humidity	87%	87%	93%	89%	83%	80%	88%	91%
UV	0	0	0	0	1	0	0	0
Model	ICON-EU	ICON-EU	ICON-EU	ICON-EU	ICON-EU	ICON-EU	ICON-EU	ICON-EU

Do the models agree?

Medium confidence

They broadly agree, but not quite on rain today: take it with some caution.

What 6 forecast models say for the next few days. The closer they are, the more reliable the forecast.

HighRainWind

Do the models agree? · High
High (°F)	Today	Thu 29	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3
ECMWF	57°	57°	59°	57°	54°	52°	51°
AIFS	57°	58°	58°	57°	54°	51°	50°
GFS	56°	57°	58°	53°	54°	55°	53°
ICON	56°	57°	57°	57°	54°	53°	53°
ARPEGE	56°	57°	56°	56°	—	—	—
ICON-EU	56°	58°	56°	58°	54°	—	—
Confidence	high	high	high	high	high	high	high

Do the models agree? · Rain
Rain	Today	Thu 29	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3
ECMWF	0.07 in	0	0	0	0	0	0
AIFS	0.09 in	0	0	0.04 in	0.00 in	0	0
GFS	0.18 in	0	0	0.05 in	0	0	0
ICON	0.01 in	0	0	0	0	0	0
ARPEGE	0.01 in	0	0.03 in	0.04 in	—	—	—
ICON-EU	0.01 in	0	0.02 in	0	0	—	—
Confidence	medium	high	high	medium	high	high	high

Do the models agree? · Wind
Wind (mph)	Today	Thu 29	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3
ECMWF	1934	1327	1425	814	1016	626	417
AIFS	17	13	13	8	9	6	7
GFS	2038	1221	1424	513	812	45	710
ICON	1831	1424	1728	511	915	59	611
ARPEGE	1832	1525	1729	713	—	—	—
ICON-EU	1734	1325	1528	613	816	—	—
Confidence	high	high	high	high	high	high	high

Chance of rain from the ensemble models

Model	Today	Thu 29	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3
ECMWF (51 scenarios)	99%	0%	10%	12%	8%	2%	2%
GFS (GEFS, 31 scenarios)	100%	0%	4%	19%	0%	0%	0%

Each model's day runs midnight to midnight local time; models that reach fewer days are left blank. Rain: daily total. Wind: the day's highest average wind and, in small type, the strongest gust. Highlighted: values that stand out from the rest. The chance of rain comes from many runs of the same model with slightly different starting data.

Outlook

How the coming weeks and months compare with what is normal for the time of year. It is a trend, not a day-by-day forecast.

The next few weeks look normal for the time of year.

Next 6 weeks

When	TemperatureTemp.	Rain	Typical high / low
Nov 2 – Nov 8Nov 2–Nov 8	A bit above +1.1 °F	Below −74%	—
Nov 9 – Nov 15Nov 9–Nov 15	Normal +0.5 °F	Normal	49° / 43°
Nov 16 – Nov 22Nov 16–Nov 22	A bit above +1.1 °F	A bit above +31%	48° / 43°
Nov 23 – Nov 29Nov 23–Nov 29	Normal +0.5 °F	Normal	47° / 42°
Nov 30 – Dec 6Nov 30–Dec 6	Normal +0.2 °F	Normal	46° / 41°

Coming months

When	TemperatureTemp.	Rain
November	Normal +0.4 °F	Normal
December	A bit above +1.1 °F	Normal
January	A bit above +1.1 °F	Normal
February	A bit above +0.9 °F	Normal
March	A bit above +1.1 °F	Normal

Weeks: ECMWF 46-day (average of its scenarios), against the normal of the last 20 years for those dates. Months: ECMWF SEAS5. Rain: total against normal. The further ahead, the closer it gets to normal and the less detail it can give.

Castlereagh climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit Castlereagh is from June to August: highs of 66 °F to 69 °F, about 12 rainy days a month and 5 hours of sunshine a day.

44° 34°

JanJ
46° 35°

FebF
51° 37°

MarM
55° 40°

AprA
62° 44°

MayM
66° 50°

JunJ
69° 53°

JulJ
67° 53°

AugA
63° 49°

SepS
56° 44°

OctO
49° 38°

NovN
44° 35°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves
JanuaryJan	44°	34°	3.06 in	14	1.1	48°	3.3 ft
FebruaryFeb	46°	35°	2.43 in	12	2.3	47°	3.5 ft
MarchMar	51°	37°	2.44 in	11	3.3	46°	2.6 ft
AprilApr	55°	40°	2.40 in	10	5.0	47°	2.2 ft
MayMay	62°	44°	2.41 in	10	5.8	49°	2.0 ft
JuneJun	66°	50°	2.85 in	11	5.3	53°	1.7 ft
JulyJul	69°	53°	3.06 in	12	4.6	56°	1.5 ft
AugustAug	67°	53°	3.49 in	12	4.0	57°	1.9 ft
SeptemberSep	63°	49°	3.11 in	11	4.0	57°	2.2 ft
OctoberOct	56°	44°	3.60 in	14	2.4	56°	2.9 ft
NovemberNov	49°	38°	3.53 in	15	1.5	54°	3.2 ft
DecemberDec	44°	35°	3.25 in	15	1.0	51°	3.7 ft

Month	Water	Waves
Jan	48°	3.3 ft
Feb	47°	3.5 ft
Mar	46°	2.6 ft
Apr	47°	2.2 ft
May	49°	2.0 ft
Jun	53°	1.7 ft
Jul	56°	1.5 ft
Aug	57°	1.9 ft
Sep	57°	2.2 ft
Oct	56°	2.9 ft
Nov	54°	3.2 ft
Dec	51°	3.7 ft

Days: rainy days in the month. Sun: hours a day.

A normal year brings 35.62 in of rain on about 147 days and about 1,250 hours of sunshine.

1991–2020 averages. Highs, lows and rainfall: TerraClimate; rainy days (0.04 in or more): NASA POWER (MERRA-2); sunshine hours: estimated from solar radiation; water: NOAA OISST; waves (average height): ERA5, 2011–2020. Normals are not a forecast: any given year can turn out very different. Sources and licenses

Temperature

Now51 °Ffeels like 50 °F

Tomorrow48 / 58 °F

It's 51 °F now (feels like 50 °F). Today, 48 °F to 56 °F; tomorrow, 48 °F to 58 °F.

Chance of rain

Today 99% 0.01 in
Thu 29 0%
Fri 30 10% 0.02 in
Sat 31 12%
Sun 1 8%
Mon 2 2%
Tue 3 2%

Today the chance of rain reaches 99%, with 0.01 in in total. No significant rain expected this week.

Recent rain: last 24 hours, 0.01 in; last 3 days, 0.49 in; last 7 days, 1.78 in.

Humidity and dew point

Humidity91%

Dew point49 °F

Humidity is 91% now and the dew point is 49 °F. The temperature is very close to the dew point: fog may form.

The dew point is the temperature at which the air becomes saturated: the higher it is, the heavier the air feels.

Visibility and fog

Now14 migood

Clouds100%

Visibility is good now (14 mi). No fog expected today.

UV index

Now0

Today's peak1low

Thu 29: 1 · Fri 30: 1 · Sat 31: 1

Index	Level	What to do
0–2	low	No special protection needed.
3–5	moderate	Hat, sunglasses and sunscreen around midday.
6–7	high	Sunscreen, hat and shade between 12 and 4 pm.
8–10	very high	Avoid the midday sun; reflection off the water adds to it.
11+	extreme	Avoid the sun between 11 am and 5 pm; protect yourself even if it is cloudy.

Reflection off water and sand adds radiation: protect yourself more on a boat or at the beach.

Barometric pressure

↗ Rising · now Anglers say fish bite less for a while
→ Steady Anglers expect normal activity
↘ Falling Anglers say fish feed more before the change

29.8030.0030.2030.40 30.36

Rising now (+0.04 inHg in 3 hours). Over the next 48 hours: +0.16 inHg. Rising pressure: anglers say fish bite less for a while. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityFair · 23

PollenNoneToday, at most none.

Pollen: Copernicus CAMS model (a rough guide, not a pollen trap). Levels use each type's usual thresholds.

Previous days

The weather over the last 30 days, as the models analyzed it. Tap a day to see it hour by hour.

Day	Sky	Low / high	Rain	Max wind
Tue 27	Drizzle	47 / 57 °F	0.07 in	23 mph SW
Mon 26	Heavy drizzle	45 / 63 °F	0.41 in	21 mph S
Sun 25	Light drizzle	45 / 50 °F	0.13 in	30 mph W
Sat 24	Light rain	42 / 54 °F	0.57 in	30 mph SW
Fri 23	Light rain	42 / 47 °F	0.57 in	18 mph NW
Thu 22	Light drizzle	39 / 52 °F	0.02 in	10 mph WSW
Wed 21	Light rain	40 / 52 °F	0.56 in	22 mph W

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Tue 20	Overcast	47 / 56 °F	0	12 mph SE
Mon 19	Light drizzle	38 / 54 °F	0.02 in	11 mph E
Sun 18	Overcast	31 / 54 °F	0	4 mph E
Sat 17	Mainly clear	40 / 54 °F	0	6 mph N
Fri 16	Light drizzle	44 / 53 °F	0.01 in	13 mph WNW
Thu 15	Drizzle	48 / 59 °F	0.21 in	19 mph SW
Wed 14	Light drizzle	49 / 62 °F	0.01 in	22 mph SSW
Tue 13	Drizzle	49 / 63 °F	0.16 in	20 mph WSW
Mon 12	Light drizzle	56 / 64 °F	0.03 in	16 mph SSE
Sun 11	Overcast	42 / 56 °F	0	16 mph SSE
Sat 10	Partly cloudy	48 / 55 °F	0	19 mph WNW
Fri 9	Light rain	50 / 59 °F	0.27 in	20 mph W
Thu 8	Light rain	44 / 58 °F	0.33 in	17 mph WSW
Wed 7	Light drizzle	44 / 54 °F	0.04 in	14 mph WNW
Tue 6	Light drizzle	47 / 55 °F	0.06 in	6 mph NNW
Mon 5	Light drizzle	55 / 64 °F	0.07 in	16 mph WSW
Sun 4	Light drizzle	49 / 65 °F	0.00 in	17 mph SW
Sat 3	Overcast	46 / 60 °F	0	10 mph SW
Fri 2	Light rain	51 / 62 °F	0.28 in	17 mph SSW
Thu 1	Light drizzle	48 / 60 °F	0.02 in	14 mph SSW
Wed 30	Rain	54 / 63 °F	0.60 in	22 mph S
Tue 29	Light rain	54 / 64 °F	0.37 in	22 mph SE
Mon 28	Overcast	46 / 60 °F	0	9 mph S

These are the models at the start of each day (ECMWF and GFS; waves from Météo-France), not readings from a weather station: there can be differences at specific spots.

Questions about the weather in CastlereaghQuestions

What's the weather like today in Castlereagh?

Light rain, from 48 °F to 56 °F, with a light air from the south-southwest (3 mph) and a 99% chance of rain.

Will it rain tomorrow in Castlereagh?

On Thursday 29 the chance of rain is 0% (0.00 in): overcast.

How warm will it be this week?

Between a low of 40 °F and a high of 58 °F; the warmest day, Saturday 31.

What's the UV index today?

It reaches 1 (low). No special protection needed.

Is the pressure rising or falling?

It's 30.21 inHg and rising: +0.34 inHg over the last 24 hours.

When is the best time to visit Castlereagh?

The best time to visit Castlereagh is from June to August: highs of 66 °F to 69 °F, about 12 rainy days a month and 5 hours of sunshine a day.

What is the weather like in Castlereagh in October?

In October, Castlereagh normally sees highs of 56 °F and lows of 44 °F, with about 14 rainy days (3.60 in for the month) and 2 hours of sunshine a day. The sea is around 56 °F. These are 1991–2020 averages.

What are the warmest and wettest months in Castlereagh?

The warmest is July, with average highs of 69 °F, and the coldest January, with lows of 34 °F. The wettest is October (3.60 in) and the driest, April.

More about Castlereagh today

Weather near Castlereagh

Only places with a different forecast: spots a few miles apart share the same model cell and wouldn't add anything.

Learn more

Weather: Open-Meteo, CC BY 4.0, with the best model for each spot and lead time (NOAA HRRR and NBM in the U.S., Météo-France AROME, DWD ICON-EU, ECMWF IFS and NOAA GFS); ECMWF grid point 6.9 mi away. The comparison also uses ICON (DWD), AIFS (ECMWF) and ARPEGE (Météo-France). Outlook: ECMWF 46-day and SEAS5. Chance of rain from ensemble models (ECMWF, GEFS and NBM). UV, air quality and pollen: CAMS (Copernicus).

Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 9:56 pm (local time).

Spotted a mistake? Tell us · Where the weather and sea data come from