World Meteorological Organization
 Official Observations
 * Cloudiness & Rain
 
 Official Forecasts
 Select WMO Region
 * Africa 
 * Asia
 * Europe
 * N. & Central America
 * S. America
 * S.W. Pacific
 What's New
 * Launch of Data Collection or Production for World Weather Information Service 
 * New Version of MyWorldWeather with Additional Language Support and Enhanced User-interface
 * Seven language versions of MyWorldWeather app launched
 * MyWorldWeather on Trial on Android Platform and with Multiple Language Support
 * WWIS Website Hitting One Billion Mark
 * Poland launched Polish version
 * MyWorldWeather - the mobile application of WWIS launched
 * Russia launched Russian version
 * Future version of WWIS launched
 * Italy launched Italian version
 * Germany launched German version
 * France launched French version
 * Spain launched Spanish version
 * New domain name for WWIS
 
 Related Web Sites
 *  WMO
 *  Severe Weather
 
 Other Languages
 *  Arabic Version
 *  Chinese Version
 *  Portuguese Version
 *  Spanish Version
 *  French Version
 *  German Version
 *  Italian Version
 *  Russian Version
 *  Polish Version
 About This Web Site
 Participating Members
 Weather Icons
 Introductory Pamphlet
 Nomination Form
 Search
 Contact
 Note to User
 Disclaimer
 Back to Main Page
This web site is operated
on behalf of WMO by

Hong Kong Observatory
of Hong Kong, China.
 
World Weather Information Service
United Kingdom of Great Britain and Northern Ireland
Met Office
Met Office
Weather Information for London
  MAPMAP
Weather Forecast
Issued at 00:00  (UTC)  18 Sep  2021 
Date Temperature oF Weather
Minimum Maximum
18 Sep
( Sat ) 		- 73 Cloudy (Medium-level cloud)
Cloudy (Medium-level cloud)
19 Sep
( Sun ) 		61 68 Cloudy (Medium-level cloud)
Cloudy (Medium-level cloud)
20 Sep
( Mon ) 		57 68 Cloudy (Medium-level cloud)
Cloudy (Medium-level cloud)
21 Sep
( Tue ) 		52 66 Cloudy (Medium-level cloud)
Cloudy (Medium-level cloud)
22 Sep
( Wed ) 		55 66 Cloudy (Low-level cloud)
Cloudy (Low-level cloud)
>> Click here for temperatures in oC
 
Climatological Information
Month Mean Temperature oF Mean Total Rainfall (mm) Mean Number of Rain Days
Daily
Minimum		 Daily
Maximum
Jan 37.6 46.6 41.6 11.4
Feb 36.9 47.5 36.3 8.5
Mar 40.3 52.9 40.3 9.8
Apr 42.6 58.3 40.1 9.0
May 48.0 64.6 44.9 9.2
Jun 53.2 69.8 47.4 7.4
Jul 56.7 74.1 34.6 6.3
Aug 56.8 73.6 54.3 8.1
Sep 52.5 68.0 51.0 8.6
Oct 47.8 59.9 61.1 10.9
Nov 42.4 52.3 57.5 10.9
Dec 38.1 47.1 48.4 9.5
>> Click here for temperatures in oC

Remarks:
* Climatological information is based on monthly averages for the 30-year period 1981-2010.
* Mean number of rain days = Mean number of days with at least 1 mm of rain.
* Attention: Please note that the averaging period for climatological information and the definition of "Mean Number of Precipitation/Rain Days" quoted in this web site may be different for different countries. Hence, care should be taken when city climatologies are compared.