PRESS WEATHER NO. 006 - HKO READINGS & RADIATION LEVEL
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HKO READINGS & RADIATION LEVEL
DISPATCHED BY HONG KONG OBSERVATORY AT 00:15 HKT ON 15.04.2025
YESTERDAY'S WEATHER AND RADIATION LEVEL:
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HONG KONG OBSERVATORY
MAXIMUM AIR TEMPERATURE 26.2 C
MINIMUM AIR TEMPERATURE 19.8 C
GRASS MINIMUM TEMPERATURE 16.8 C
RELATIVE HUMIDITY 33 - 69 PERCENT
RAINFALL 0 MM
TOTAL RAINFALL SINCE 1ST JANUARY 82.6 MM
AGAINST AN AVERAGE OF 219.3 MM
OTHER STATIONS MIN MAX
KING'S PARK 18.8 C 26.5 C
WONG CHUK HANG 16.6 C 27.7 C
TA KWU LING 12.0 C 29.5 C
LAU FAU SHAN 16.6 C 28.6 C
TAI PO 16.4 C 29.5 C
SHA TIN 14.5 C 29.7 C
TUEN MUN NO DATA NO DATA
TSEUNG KWAN O 14.9 C 28.9 C
SAI KUNG 17.2 C 27.1 C
CHEUNG CHAU 17.7 C 28.5 C
CHEK LAP KOK 19.0 C 28.1 C
TSING YI 18.3 C 27.0 C
SHEK KONG 14.2 C 28.8 C
TSUEN WAN HO KOON 16.4 C 26.9 C
TSUEN WAN SHING MUN VALLEY 14.4 C 28.6 C
HONG KONG PARK 19.4 C 27.3 C
SHAU KEI WAN 19.5 C 28.3 C
KOWLOON CITY 18.0 C 28.8 C
HAPPY VALLEY 18.5 C 29.7 C
WONG TAI SIN 16.4 C 28.4 C
STANLEY 18.2 C 27.1 C
KWUN TONG 18.1 C 28.5 C
SHAM SHUI PO 16.9 C 28.8 C
KAI TAK RUNWAY PARK 19.7 C 27.4 C
YUEN LONG PARK NO DATA NO DATA
TAI MEI TUK 17.3 C 30.1 C
DURATION OF SUNSHINE (KING'S PARK): 11.0 H
THE MEAN UV INDEX RECORDED AT KING'S PARK YESTERDAY WAS 4,
THE UV INTENSITY WAS MODERATE.
THE MAXIMUM UV INDEX FOR YESTERDAY WAS 9.
SEA SURFACE TEMPERATURE (WAGLAN ISLAND): 20.9 C
YESTERDAY'S (14 APR 2025) AVERAGE AMBIENT GAMMA RADIATION
DOSE RATE TAKEN OUTDOORS IN HONG KONG RANGED FROM 0.09 TO
0.15 MICROSIEVERT PER HOUR. THESE ARE WITHIN THE NORMAL
RANGE OF FLUCTUATION OF THE BACKGROUND RADIATION LEVEL IN
HONG KONG (SEE NOTE). THE AVERAGE DOSE RATES MEASURED AT
THE RADIATION MONITORING STATIONS OVER VARIOUS PARTS OF THE
TERRITORY WERE AS FOLLOWS :
STATION YESTERDAY'S AVERAGE
(MICROSIEVERT/HOUR)
PING CHAU 0.09
TAP MUN 0.09
KAT O 0.10
YUEN NG FAN 0.12
TAI MEI TUK 0.12
SHA TAU KOK 0.10
KWUN TONG 0.13
SAI WAN HO 0.09
KING'S PARK 0.15
TSIM BEI TSUI 0.13
CAPE D'AGUILAR 0.12
CHEK LAP KOK 0.15
NOTE
1. FROM READINGS TAKEN AT VARIOUS LOCATIONS IN HONG KONG IN THE
PAST, THE HOURLY MEAN AMBIENT GAMMA RADIATION DOSE RATE MAY
VARY BETWEEN 0.06 AND 0.3 MICROSIEVERT PER HOUR.
(1 MICROSIEVERT = 0.000001 SIEVERT = 0.001 MILLISIEVERT)
2. TEMPORAL VARIATIONS ARE GENERALLY CAUSED BY CHANGES IN
METEOROLOGICAL CONDITIONS SUCH AS RAINFALL, WIND AND
BAROMETRIC PRESSURE.
3. SPATIAL VARIATIONS ARE GENERALLY CAUSED BY DIFFERENCES IN
THE RADIOACTIVE CONTENT OF LOCAL ROCK AND SOIL.
4. THE DATA DISPLAYED IS PROVISIONAL. ONLY LIMITED DATA
VALIDATION HAS BEEN CARRIED OUT.
5. THE RANGE OF RELATIVE HUMIDITY IN THE DAILY WEATHER SUMMARY
ORIGINATES FROM THE OBSERVER'S REPORTS OF HOURLY READINGS
OF THE DAY. THIS FOLLOWS THE LONG-TERM PRACTICE OF COLLECTING
CLIMATOLOGICAL DATA OF THE HONG KONG OBSERVATORY FOR OVER A
CENTURY. IT MAY DIFFER FROM THE RELATIVE HUMIDITY RANGE
DERIVED FROM THE 1-MINUTE REPORTS OF THE AUTOMATIC WEATHER
STATION.
DISPATCHED BY HONG KONG OBSERVATORY AT 00:15 HKT ON 15.04.2025
Ends/Tuesday, April 15, 2025
Issued at HKT 0:15
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