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

Latest Message

(2022/05/21 12:50 HKT)

Our policy on tropical cyclone report issuance is updated as follows, with immediate effect:

  • A full report is issued for tropical cyclones within the region bounded by 10-30°N, 100-135°E. The content of a full report is the same as the regular reports issued previously.
  • A brief report is issued for tropical cyclones within the region bounded by 0-50°N, 100-180°E but outside the above region. A brief report contains information and a synopsis of the tropical cyclone, together with relevant images.
We appreciate your understanding in this matter, and thank you for your continued support.

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

  • Prolonged heat alert! Please drink sufficient water. If feeling unwell, take rest or seek help immediately. If needed, seek medical advice as soon as possible.

    Issued at 19:00 HKT 30/May/2023


Earthquake Info

+M 4.7 - 13 km SE of Abra de Ilog, Philippines

UTC Time: Tue 2023/05/30 01:04:31
HK Time: Tue 2023/05/30 09:04:31

Location: 13.35N 120.81E; Magnitude: 4.7
1,216 km SE of HK
Depth: 85.433 km

Tropical Cyclone Information [Details] [HKO link]

- Category 2 Typhoon MAWAR bulletin #11 (2023/05/30, 21:45 HKT)

Tropical Cyclone Track

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

Regional Weather of Hong Kong

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.

Real-time photo at Central

Astronomical / Tidal Information [Details] [HKO link]

Info for 30/05/2023 (Tuesday):
Astro. Info
Sunrise:05:3906:521.63 m
Sunset:19:0211:491.27 m
Moonrise:14:2817:371.57 m
Moonset:02:0823:590.84 m

Planetary phenomena in the coming week:
Jun 01, 14:22 HKT: Moon Descending Node
Jun 04, 11:42 HKT: Full Moon
Jun 04, 18:59 HKT: Venus Elongation: 45.4° E
Jun 06, 00:21 HKT: Moon South Dec.: 27.9° S
(Source: NASA)

Weather at a Glance [Details] [HKO link]

Weather at a Glance Data as of 22:50 on 30/5/2023

31.7 C 75 % 1002.7 hPa
All measurements taken at Hong Kong Observatory
HKO Temp.:31.7 C
RH.: 75 %
Apparent Temp.:41.3 C (DANGER)
Dew Point:26.7 C
Temp. of today:34.6 / 28.0 C (Range 6.6 C)
Mean SLP.:1002.7 hPa
King's Park Wind:5 km/h (E)
Rain:0.0 mm (past 15 min)

Upper-Level Weather Information [Details]

Data as of 20:00 HKT on 30/5/2023 - Level of instability:

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

3-day Weather Forecast Data as of 19:20 HKT 30/May/2023

General Situation: Tropical Cyclone Mawar will move north slowly over seas east of Taiwan tomorrow, and then move in the general direction of the Ryukyu Islands and weaken gradually. Under the influence of its outer subsiding air, it will be persistently very hot over the coast of southern China in the next couple of days. Showers and thunderstorms triggered by high temperatures will affect the region. A trough of low pressure is expected to bring a few showers to the coast of Guangdong and the northern part of the South China Sea during the weekend and early next week.

31/5 (Wed)

Very hot with sunny periods and a few showers. Isolated thunderstorms later.

Very hot with sunny intervals. A few showers and isolated thunderstorms.

Very hot with sunny periods and a few showers. Isolated thunderstorms in the morning and at night.
Wind W to NW force 2 to 3. W to SW force 2 to 3. W to SW force 2 to 3.
28 - 34 °C
27 - 33 °C
27 - 33 °C
65 - 95 %
70 - 95 %
70 - 95 %

Extended Temperature Outlook [HKO link]

Maximum temperature:

Maximum temperature

Minimum temperature:

Maximum 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]

HK International Airport METAR report Data as of 23:00 HKT on 30 May 23

Original code: METAR VHHH 301500Z 22005KT CAVOK 32/26 Q1003 NOSIG=

Wind Visibility WeatherCloud BaseTemperature Dew Point Pressure (QNH)
5 knots from 220 degrees (SW)
10 km or above
No significant weather
No cloud below 5000 feet,
no cumulonimbus.
32 oC
26 oC
1003 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 Facebook Page [Link]



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: Tue, Jan 03 2023