Bookmark and Share
Page refreshed at   [Refresh] [中文]

Latest Message

(2017/05/21 12:15 HKT)

The page "Northwest Pacific - ASCAT Image" has now been updated to reduce image loading time.

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

Earthquake Info

+M 4.5 - 10km SSE of Jiayi Shi, Taiwan

UTC Time: Wed 2017/05/24 13:10:54
Local Time: Wed 2017/05/24 21:10:54
HK Time: Wed 2017/05/24 21:10:54

Location: 23.40N 120.49E; Magnitude: 4.5
659 km E of HK
Depth: 12.85 km

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

Regional Weather of Hong Kong

Tropical Cyclone Information [Details] [HKO link]

Astronomical / Tidal Information [Details] [HKO link]

Info for 25/05/2017 (Thursday):
Astro. Info
Sunrise:05:4002:020.9 m
Sunset:19:0008:442.2 m
Moonrise:05:0915:070.4 m
Moonset:18:2621:461.7 m

Weather at a Glance [Details] [HKO link]

Weather at a Glance Data as of 01:40 on 25/5/2017

24.5 C 83 % 1007.8 hPa
All measurements taken at Hong Kong Observatory
HKO Temp.:24.5 C
RH.: 83 %
Apparent Temp.:24.5 C
Dew Point:21.4 C
Temp. of today:25.0 / 24.5 C (Range 0.5 C)
Mean SLP.:1007.8 hPa
King's Park Wind:1 km/h (VRB)
Rain:0.0 mm (past 15 min)

Upper-Level Weather Information [Details]

Data as of 20:00 HKT on 24/5/2017 - Level of instability:

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

3-day Weather Forecast Data as of 00:00 HKT 25/May/2017

General Situation: With the trough of low pressure affecting the coast of Guangdong moving towards the northern part of the South China Sea, the weather over Guangdong will improve gradually in the next couple of days. A relatively dry easterly airstream is expected to bring fine weather to the south China coast during the weekend and early next week.

25/5 (Thu)

Mainly cloudy with one or two showers.

Sunny intervals and one or two isolated showers.

Sunny periods. Dry during the day.
Wind N to NE force 4. E to NE force 4, occasionally force 5. E force 4, occasionally force 5.
23 - 27 °C
24 - 28 °C
24 - 28 °C
75 - 95 %
65 - 85 %
60 - 80 %

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

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

The following photo shows the real-time view of Victoria Harbour (active from 5am to 9pm), as viewed from Central towards the east.

Real-time photo at Central

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]

HK International Airport METAR report Data as of 01:30 HKT on 25 May 17

Original code: METAR VHHH 241730Z 04005KT 020V080 9999 FEW020 SCT035 25/22 Q1008 NOSIG=

Wind Visibility Weather Cloud Amount Cloud Base Temperature Dew Point Pressure (QNH)
5 knots from 040 degrees (NE), variability: 020-080 degrees
10 km or above
No significant weather
1 to 2 oktas
3 to 4 oktas
2000 feet
3500 feet
25 oC
22 oC
1008 hPa

Next Two Hours Change
No Significant Change

Meteorological Calculation

A. Conversion between units


B. Calculation of distance between places on Earth

Place 1:     Lat :   Long :
Place 2:     Lat :   Long :

Current Partner Sites [Details]


Our Blog [Link]


↑ Grab this Headline Animator

Recent posts :

  • 甚麼是「N年一遇」?「千年一遇」等說法是不是空談? - 06/04 - 過去幾天本港經歷大雨冰雹天氣,之後天文台及渠務署就該場大雨的罕見程度各自表述。渠務署稱大家對重現期 (return period) 估計的差異源於量度尺度之不同,這引發坊間對「N年一遇」等說法的討論。
  • 昨夜的大雨 - 31/03 - 受低壓槽影響,本港昨晚天氣不穩定;大雨集中在晚上8時前後,多處於數小時內錄得過百毫米雨量,而香港中部自西至東均有冰雹報告,天文台首次於三月發出紅色及黑色暴雨警告。雖然香港間有落雹,但今次範圍之大實在罕見。


This site is best viewed at 1024 x 768 resolution.

All weather information of Hong Kong contained in this site is given by the Hong Kong Observatory. Permission has been granted by the Observatory for the reproduction of weather information in this site.

Last Modified: Wed, Jul 27 2016