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ANTIGUA METEOROLOGICAL SERVICES CLIMATOLOGICAL DATA
FOR THE PERIOD 01/01/2004 AT 13:00 TO
01/01/2005 AT 12:00
OBSERVATION SUMMARY |
|
OBSERVATIONS |
JAN |
FEB |
MAR |
APR |
MAY |
JUN |
JUL |
AUG |
SEP |
OCT |
NOV |
DEC |
AV/SUM |
MAX |
MIN |
|
WIND DIRECTION |
ESE |
E'S |
E |
ESE |
E'S |
ESE |
ESE |
E'S |
E'S |
VRB |
E |
E |
ESE'LY |
|
|
|
WIND SPEED: |
10.6 |
12.3 |
13.0 |
11.5 |
13.6 |
13.5 |
13.2 |
12.0 |
9.4 |
7.6 |
9.4 |
11.0 |
11.4 |
13.6 |
7.6 |
|
MAX 10-MIN WIND |
22.0 |
24.0 |
24.0 |
22.0 |
24.0 |
20.0 |
22.0 |
20.0 |
9.4 |
17.0 |
20.0 |
22.0 |
20.5 |
24.0 |
9.4 |
|
BARO PRESS: |
1015.9 |
1017.2 |
1015.1 |
1014.8 |
1016.1 |
1017.9 |
1016.1 |
1016.2 |
1013.1 |
1012.2 |
1012.7 |
1014.5 |
1015.2 |
1017.9 |
1012.2 |
|
TOTAL RAINFALL:inches |
1.59 |
2.96 |
1.94 |
2.07 |
7.42 |
2.67 |
5.00 |
1.71 |
4.49 |
9.81 |
7.42 |
2.17 |
49.26 |
9.81 |
1.59 |
|
TOTAL RAINFALL:mm |
40.40 |
75.20 |
49.30 |
52.60 |
188.50 |
67.90 |
127.10 |
43.40 |
114.00 |
249.20 |
188.40 |
55.10 |
1251.10 |
249.20 |
40.40 |
|
MAX 24-HOUR |
7.6 |
37.5 |
11.8 |
24.0 |
42.7 |
26.0 |
27.5 |
9.9 |
41.7 |
37.3 |
65.5 |
9.9 |
28.5 |
65.5 |
7.6 |
|
MAX 6-HR RAINFALL: |
6.0 |
20.5 |
6.7 |
12.2 |
28.8 |
19.0 |
24.4 |
9.9 |
38.4 |
37.2 |
33.4 |
7.9 |
20.4 |
38.4 |
6.0 |
|
AVG MAX TEMP: |
26.8 |
26.7 |
26.9 |
28.1 |
27.9 |
28.9 |
28.8 |
30.1 |
29.8 |
29.1 |
27.3 |
26.7 |
28.1 |
30.1 |
26.7 |
|
MAX: |
29.0 |
29.4 |
30.1 |
31.6 |
31.7 |
31.0 |
31.0 |
32.5 |
33.5 |
32.1 |
30.4 |
29.2 |
31.0 |
33.5 |
29.0 |
|
AVG MIN TEMP: |
23.5 |
23.5 |
23.7 |
24.9 |
25.2 |
26.2 |
26.0 |
26.8 |
26.0 |
25.4 |
24.5 |
24.2 |
25.0 |
26.8 |
23.5 |
|
MIN: |
20.4 |
20.5 |
21.3 |
20.1 |
22.2 |
22.1 |
22.1 |
21.8 |
21.9 |
22.3 |
20.4 |
21.5 |
21.4 |
22.3 |
20.1 |
|
AVG TEMP: |
25.1 |
25.1 |
25.3 |
26.5 |
26.5 |
27.5 |
27.4 |
28.4 |
27.7 |
27.0 |
25.8 |
25.5 |
26.5 |
28.4 |
25.1 |
|
WARMEST DAY: |
25.8 |
25.9 |
25.9 |
27.2 |
27.7 |
28.4 |
28.0 |
29.1 |
28.9 |
28.2 |
27.2 |
26.7 |
27.4 |
29.1 |
25.8 |
|
COOLEST DAY: |
23.7 |
23.1 |
24.1 |
25.4 |
24.5 |
26.4 |
26.3 |
27.1 |
24.9 |
25.2 |
24.3 |
24.4 |
25.0 |
27.1 |
23.1 |
|
AVG REL HUM: |
75.0 |
74.5 |
73.7 |
70.6 |
77.7 |
76.6 |
78.2 |
74.8 |
77.7 |
82.7 |
79.3 |
78.2 |
76.6 |
82.7 |
70.6 |
|
MOST HUMID-DAY: |
84.9 |
87.4 |
83.3 |
81.3 |
89.6 |
81.5 |
88.2 |
84.7 |
90.6 |
89.8 |
93.6 |
90.6 |
87.1 |
93.6 |
81.3 |
|
LEAST HUMID-DAY: |
64.8 |
65.7 |
63.5 |
59.0 |
67.8 |
71.3 |
72.4 |
69.5 |
71.3 |
75.7 |
66.4 |
68.4 |
68.0 |
75.7 |
59.0 |
|
TOTAL CLOUDS |
3.8 |
4.1 |
4.4 |
4.3 |
5.8 |
5.3 |
5.3 |
4.7 |
5.5 |
5.8 |
5.1 |
4.3 |
4.9 |
5.8 |
3.8 |
|
TOT LOW CLOUDS |
3.7 |
3.9 |
4.0 |
3.5 |
4.6 |
3.6 |
3.9 |
3.4 |
3.6 |
4.0 |
4.0 |
4.1 |
3.9 |
4.6 |
3.4 |
|
EVAPO-FAO-PENMAN-ins |
6.0 |
6.1 |
6.9 |
7.6 |
6.4 |
6.8 |
6.5 |
7.6 |
5.7 |
3.9 |
4.8 |
5.4 |
73.8 |
7.6 |
3.9 |
|
Top
PRECIPITATION
Rainfall across Antigua and Barbuda and indeed the rest of the
Caribbean was above normal. Across Antigua and Barbuda, the
rainfall was some 24 % above the 45-year normal of 46 inches.
There was in effect no dry season as rain fell steadily from month to
month. In all 1251.1 millimeters or 49.26 inches were recorded at
V.C Bird Int'l with a max 24-hour rainfall of 65.5 millimeters
on the 19/11/2004, and a max 6-hour rainfall of 38.4 millimeters on 14/09/2004 at
18:00 .
Notably, only a small amount of rainfall was as a result of storms,
which did not have any real effect on Antigua and Barbuda. The
maximum monthly
rainfall occurred in October, 9.81 inches, with November and May
contributing 7.42 inches each. May, which in recent times failed
to produce the significant rainfall for which it is known, was quite wet
across the islands leading to flooding in some areas.
The month of August was the notable dry month across the islands with
1.71 inches, down from an average of about 4 inches.
Rainfall data from other rainfall stations
Rainfall across the islands showed a great degree of monthly pattern
consistency as seen below.
Top
TEMPERATURE
The average monthly air temperature recorded at V.C Bird
International Airport over the year 2004 was 26.5 °C a little
lower than last year with 26.9°C. August was the warmest month of the year with an average
temperature of 28.4°C. August predictably had the highest monthly average maximum
temperature of 30.1°C but the highest daily maximum temperature of 33.5°
C occured on the 12th of September 24th
between 6 am and 2 pm. January and February shared the coolest month of the year with
average temperatures of 25.1° C and an average minimum temperature
of 23.5° C. The lowest minimum temperature 20.4° C
occurred on 1st January between midnight and 6am. The
warmest day i.e. the day with the highest daily average temperature
29.1°C occurred on August 20th, while the coolest day
23.1°C occurred on February 24th.
Top
WIND
The average wind speed for the past year was 11.6 knots ,taken at a
height of 10 meters ,with an average wind direction of 110° or
East-South-Easterly. May was the month with the highest average monthly
wind speed of 13.6 knots. October, as it did last year, had the lowest average monthly
wind speed 7.6 knots. The highest daily average wind speed of 19.6
knots was recorded on March 2 nd and the
lowest daily average wind speed of 1.1 knots was on November 13th.
The highest hourly wind was 24 knots recorded on May 3rd at
8 pm.
Top
AIR PRESSURE
The average sea level pressure recorded at V.C Bird International
Airport over the past year was 1015.2 millibars, above the annual normal
of 1014.6. The highest monthly sea level pressure occurred in
June at 1017.9 millibars, while the lowest monthly sea level
pressure 1012.2 millibars was recorded in October; the same as last year . The highest
daily sea level pressure 1020.3 millibars was recorded on the 5th
of March while the lowest 1006.9 millibars was recorded on 12th
November.
Top
CLOUD COVER
The average total cloud cover for the past year was 4.9 oktas
(eights). October had the highest average total cloud cover 5.8 oktas while
January had the lowest with 3.8 oktas. The day with the
highest total cloud cover was May 20th with 7.8 oktas,
while April 4th had the lowest with 2.0 oktas. In
terms of the lowest cloud total cover May had the
highest, 4.6 while August had the lowest with 3.4 oktas.
Top
HUMIDITY
The average relative humidity for the past year was 76.6 % up
from last year's 74.8 %(percent).
The highest average monthly relative humidity 82.7 % was observed in
October while the lowest 70.6 % in April. The hightest
daily average 93.6 % occurred on the 10th of November while the lowest daily
59 % occurred on the 13th April.
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