Latest Message

(2019/11/28 10:50 HKT)

The HKO webpage was revamped today. Some of our links to pages on that site and features that rely on those pages may cease functioning. We are updating these pages and features gradually. Sorry for the inconvenience caused.

Warning(s) in Force [Details] [Def]

 

Weather Details around Hong Kong [Details] [HKO link]

Tropical Cyclone Information [Details] [HKO link]

Real-time Weather Photos [Details] [HKO link]

The following photo shows the real-time view of Victoria Harbour, as viewed from Central towards the east.

Astronomical / Tidal Information [Details] [HKO link]

Info for 08/12/2019 (Sunday):

Astro. Info				Tide
Sunrise	:	06:50		01:06	1.31 m
Sunset	:	17:39		06:32	1.64 m
Moonrise	:	15:03		12:12	1.14 m
Moonset	:	03:00		19:37	2.07 m

Dec 12, 13:12 HKT: Full Moon

Dec 13, 22:15 HKT: Moon Ascending Node

Dec 14, 04:57 HKT: Moon North Dec.: 23.2° N

Dec 15, 02:25 HKT: Geminid Shower: ZHR = 120

Weather at a Glance [Details] [HKO link]

Data as of 16:30 on 8/12/2019

• In Brief
• Detailed

17.7 C	47 %	1022.7 hPa
All measurements taken at Hong Kong Observatory

HKO	Temp.:	17.7 C
	RH.:	47 %
	Apparent Temp.:	17.7 C
	Dew Point:	6.2 C
	Temp. of today:	19.5 / 13.0 C (Range 6.5 C)
	Mean SLP.:	1022.7 hPa
King's Park	Wind:	6 km/h (E)
	UV:	1 (Low)
	Rain:	0.0 mm (past 15 min)

Upper-Level Weather Information [Details]

Data as of 08:00 HKT on 8/12/2019 - Level of instability:

Delta P Values

At 2019/12/08 14 HKT: [Explanation] [Values for the past 10 days]

Delta p(972) = 3.5
Delta p(S) = 5.3

3-day Weather Forecast [Click for 9-day] [HKO link]

Data as of 16:30 HKT 08/Dec/2019

General Situation: The northeast monsoon will moderate gradually. Temperatures over southern China will rise progressively in the next couple of days. Meanwhile, the weather remains fine and dry over the region. The temperature difference will still be relatively large between day and night. A fresh easterly airstream is expected to affect the coast of Guangdong in the latter part of this week and it will become cloudy over the region.

Date	9/12 (Mon)	10/12(Tue)	11/12(Wed)
Weather	Fine and dry. Rather cool in the morning.	Mainly fine and dry.	Fine and dry.
Wind	NE force 3 to 4, occasionally force 5 offshore at first.	NE force 3 to 4.	N to NE force 3.
Temp.	14 - 20 °C	16 - 21 °C	16 - 22 °C
R.H.	40 - 70 %	45 - 70 %	40 - 70 %

Extended Temperature Outlook [HKO link]

Maximum temperature:

Minimum temperature:

Weather Conditions in South China Sea [Details] [HKO link]

Satellite / Radar Images [Details]

Radar: 256 km range	Radar: 128 km range	Radar: 64 km range	Satellite: IR imagery*

* The Satellite imagery above is taken by Himawari-8 operated by the Japan Meteorological Agency (JMA).

Aviation Weather Observation Report [HKO link]

Data as of 16:30 HKT on 08 Dec 19

Original code: METAR VHHH 080830Z 28006KT 250V310 CAVOK 20/02 Q1022 NOSIG=

Wind	Visibility	Weather	Cloud Base	Temperature	Dew Point	Pressure (QNH)
6 knots from 280 degrees (W), variability: 250-310 degrees	10 km or above	No significant weather	No cloud below 5000 feet, no cumulonimbus.	20 oC	2 oC	1022 hPa

Next Two Hours Change

No Significant Change

Meteorological Calculation

A. Conversion between units Please select unit --------- Temperature --------- C     Celsius F     Fahrenheit K     Kelvin R     Rankine --------- Length --------- km     Kilometre mi     Statute Mile NM     Nautical Mile --     Degree of Latitude m     Metre ft     Foot --------- Speed --------- km/h     Kilometre per Hour m/s     Metre per Second mph     Statute Mile per Hour kt     Knot (Nautical Mile per Hour) --------- Direction --------- Degree(s) => Direction --------- Pressure --------- hPa/mb     Hectopascal/Millibar inHg     Inch of Mercury atm     Atmosphere mmHg     Torr

B. Calculation of distance between places on Earth Place 1:     Lat :   Long : Place 2:     Lat :   Long :

Current Partner Sites [Details]