DOHA, QATARClimate: Subtropical and Arid

ANNUAL SUMMARY•Average temperature: 17-35ºC

•Average daily hours of sunshine: 9.5

•Average rainfall: 98 mm

•Prevailing wind direction: N/NE

•Average wind speed: 8-24 km/h

•Lat. 25°15’N, Long. 51°34’E

CLIMATE Doha is situated in the Arabian Peninsula within the Arabian Gulf. The sun shines almost every day of the year with few overcast days. Temperatures average over 30 degrees Celsius from May to September, reaching 40 degrees frequently. Rainfall is scarce, falling on isolated days mostly between October to March. During cool winter nights the temperature can drop below 10 degrees Celsius.

SUN ANGLES: Doha (Abu Dhabi)

•Jun. 21 9am: 48º (43º)

•Jun. 21 noon: 88º (84º)

•Jun. 21 4pm: 37º (41º)

•Dec. 21 9am: 25º (10º)

•Dec. 21 noon: 42º (42º)

•Dec. 21 4pm: 15º (19º)

100%

80%

60%

40%

20%

100 mm

0 mm

150 mm

50 mm

50°C

40°C

30°C

20°C

TEMPERATURE

HUMIDITY

PRECIPITATION

200 mm

0%

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC

ASHRAE Comfort Zone

16 9 4 0 00 0 1 3 1242

238 0 0 00 0 0 2 9

ASHRAE Comfort Zone

Avg. Max. Temperature

Average Temperature

Avg. Min. Tempera-

41713

10°C

WORLD CLIMATE: Doha International Airport

WORLD CLIMATE: Doha International Airport

WORLD CLIMATE: Doha International Airport

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= Doha

= Reference City (Abu Dhabi)

CLIMATE ANALYSIS

WIND Wind speed fluctuates throughout the year, with highest wind speeds in the winter and spring ranging from 5-30 km/h. Wind direction generally comes from the N and NE directions throughout the year. In August and September winds may come from the west. Light morning breezes in the summer may blow from almost any direction, with afternoons and evenings having stiffer, warmer breezes, generally from the east and north.

Data Sources: Weather Underground, Doha International Airport

N

NW

S

E

30 km/h

20 km/h

10 km/h

0 km/h

January February March

N

NWS

E

30 km/h

20 km/h

10 km/h

0 km/h

April May June

N

NWS

E

30 km/h

20 km/h

10 km/h

0 km/h

July August September

N

NWS

E

30 km/h

20 km/h

10 km/h

0 km/h

October November December

WINTER WIND SPEED AND DIRECTION

SPRING WIND SPEED AND DIRECTION

SUMMER WIND SPEED AND DIRECTION

AUTUMN WIND SPEED AND DIRECTION

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SUN ANGLES: Doha International Airport•Jun. 21 9am: 48º

•Jun. 21 noon: 88º

•Jun. 21 4pm: 37º

•Dec. 21 9am: 25º

•Dec. 21 noon: 42º

•Dec. 21 4pm: 15º

THERMAL COMFORT The Psychrometric chart shows the standard indoor comfort zone in yellow. Each month’s temperature and humidity is shown with black lines. Selected strategies, shown as colored areas, extend the comfort zone without mechanical heating or cooling.Exposed mass and night purge ventilation, evaporative cooling, passive solar heating, and natural ventilation look like the most effective strategies from this chart. If these strategies are be implemented successfully, the building may be able to operate for up to eight months of the year without significant heating or cooling costs, and with reduced mechanical cooling costs for the rest of the year.

SUN PATHThe chart above shows the suns path in plan view.

SOLSTICE SUNRISE/SUNSETJun. 21: 4:44 AM 6:27 PMDec. 21:6:15 AM 4.49 PM

PSYCHROMETRIC CHART

HU

MID

ITY

TEMPERATURE

Plan view of the sun path through the sky showing altitude and azimuth.

SUN PATH DIAGRAM

Doha International Airport Datagaisma.comDoha International Airport Data

Strategies:ASHRAE Comfort ZoneNatural VentilationThermal MassPassive Solar HeatingExposed Mass and Night PurgeIndirect Evaporative Cooling

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CLIMATE ANALYSIS