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for the appropriate procedure. For more comprehensive Climate Database enquiries, please download this document for the appropriate procedure. (NOTE :- The outlook is based on records at Abu Dhabi International Airport for the period 1982-2000 and should not be interpreted as a forecast. The data are representative for Abu Dhabi only.)
January is normally the coolest month of the year with diurnal temperatures ranging from 12°C to 24°C. The highest temperature recorded was 34.3°C in 1991 and the lowest 5.6°C in 1991. Spells of unsettled weather can occur with average of 4-5 rain-days (inc. trace) and an average rainfall total of 12.8mm. Fog occurs on an average of 4 mornings. Mean sea level pressure reaches its annual peak around 1018.2 hPa.
FEBRUARY
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February is on average the wettest month, with a mean of 30.7mm, although variability has ranged from nil to 202.3mm in the last 19 years. Rainfall is normally associated with the passage of thundery troughs. Fog frequency is about 4 days. Temperatures begin to increase, with an average daily range between 13.9°C and 25.2°C, and sunshine values average 8.8 hours per day. Mean sea level pressure should be around 1016.3 hPa.
With an average monthly rainfall of 21.2mm, March is the second wettest month of the year. Variability is high however, with 109.3mm recorded in 1982 and only a trace in 1986, 1988, 1993 & 2000. Most precipitation is likely to fall from thunderstorms, with March having the highest number of thunderstorm days. Although the monthly average is less than 3 days, variability is again high, and in 1987 there were 7 thunderstorm days. Temperatures see a marked seasonal increase with the mean maximum temperature of 28.6°C almost 4°C higher than February, and the mean minimum temperature of 16.1°C nearly 3°C higher than February. Fog is relatively infrequent with an average of 3 fog days. Mean sea level pressure falls to a mean of 1014 hPa.
Temperatures follow a seasonal increase with the mean maximum reaching the mid to upper thirties (deg.C) by month end. Incidence of fog is low and sunshine averages around 10 hours daily. Mean pressure falls to around 1010 hPa. The monthly rainfall average is 7mm, although rainfall is very variable from year to year, usually occurring in association with the passage of thundery troughs. On average April has 1 day with thunder.
Average daily minimum and maximum temperatures range between 23°C and 39°C although statistical extremes fall in the range 17°C to 47°C. May is normally one of the sunniest months of the year with around 12 sunshine hours per day. Rainfall expectancy is low, with only a trace being recorded. May's frequency of fog is low with a mean occurrence of 2 days. Pressure will continue its seasonal fall to between 1004 and 1008 hPa.
With the onset of the hot humid summer, temperatures are expected to vary diurnally between 25°C and 41°C with occasional maxima around 45-46°C. Nocturnal humidities can be expected to be near 80% falling to about 25% during the hottest part of the day. The daily average maximum wet bulb temperature for June is 27.2°C. No rainfall is expected. Average daily sunshine is over 11 hours. Mean sea level pressure continues its seasonal fall and can be expected to be within 998 to 1002 hPa. Fog incidence is low, although visibilities in June can be restricted by haze, dust and rising sand. Winds should be mainly moderate westerly to northwesterly.
July is usually the hottest month of the year with diurnal
temperatures ranging between 28°C and 42°C and long term extremes
between 22°C and 49°C. Sunshine hours average 10.7 hours/day
and cloud amounts are small - a daily average of 1.3 oktas. July is
statistically the haziest month with an average 26 haze days. Pressure
reaches the lowest annual value with a mean of 997.1 hPa. Fog is infrequent
with a seasonal occurrence of 2 days.
Similar to July with mean temperatures ranging between 42°C and 29°C and with absolute values ranging between 49°C and 24°C. The mean daily wet bulb temperature of 27°C is marginally higher than in July as is the mean maximum wet bulb of 29.2°C. Rainfall is rare with only 2 months recording measurable rainfall since 1982. Fog occurrence is low with 2.1 days on average. Haze is still persistent with an average of 26 haze days.
Despite a seasonal decline, the mean maximum temperature for September is 40.3ºC - only 2ºC lower than August. The extreme maximum temperature for September was 47.7ºC in 1999. A more noticeable fall-off in the minimum temperatures is observed with the long term mean of 25.9ºC, a full 3ºC lower than August. Fog becomes more probable with 5 fog days a month on average although this varies widely from year to year. Mean sea level pressures show a sharp seasonal rise to 1004.8 hPa, up from the August value of 999.0 hPa. September is normally less hazy than August with around 22 'haze days'.
Mean maximum temperatures fall steadily from around 40°C to 36°C during the month with minima falling from around 26°C to 22°C. The absolute maximum recorded for October was 43.1°C in 1997 and the extreme minimum was 14.6°C in 1984. October is normally precipitation free with only a trace recorded in 1995, 2000 and 5.5mm in 1997. Fog incidence is normally similar to September, occurring on average around five mornings during the month. However, variability is high ranging from 17 occasions in 1991 to one occasion in 1990, 1992 & 1998. General haziness shows a steady decrease from 22 days in September to 19 in October. Pressure rises to a monthly mean of 1011.6 hPa.
Temperatures continue their seasonal fall with average maxima and minima decreasing from 36ºC and 22ºC to around 31ºC and 18ºC by the end of the month. Extreme maximum and minimum temperatures recorded in November were 37.9ºC in 1999 and 12.0ºC in 1982. November is usually dry and sunny, averaging around 10 hours sunshine per day. However 18.4mm of rain occurred in 1982 over 2 'rain days'. Fog is unusual with 2 days on average. Visibilities are good with around 14 haze days. Atmospheric pressure continues to rise with a monthly mean of 1015.8 hPa.
Temperatures continue their seasonal decline with the mean maximum falling from 31°C to 26°C and the mean minimum from 18°C to 14°C. Cloud amounts show a seasonal increase. Rainfall averages 9mm. Thunderstorms are unusual. On average a thunderstorm has been recorded only in about one December in five. Sea level pressure rises to a mean value of 1018.1 hPa.
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