Climate RIPAS Hospital Heliport 2020-2024

Climate and trends: average temperature, flight conditions, precipitation, wind speed and direction.

Calculated from historical METAR data of Brunei International Airport (WBSB) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	95.3	98	98	92	90	96
February	95.5	99	96	99	93	100
March	94.4	90	96	92	98	94
April	95.7		100	95	96	97
May	95.6		98	94	94	97
June	95.7		98	96	97	95
July	93.9		93	94	97	95
August	91.4		99	96	96	96
September	88.4		96	94	97	95
October	94.2		97	96	96	90
November	96.4		99	98	95	96
December	94.2		99	93	95	98
Average	94.4	95.4	97.3	94.9	95.2	95.8

1st best VFR conditions of Brunei

VFR conditions during daylight period

Percentage of observations where the VFR minimums for ceiling and visibility are met: visibility of 8 km or more and a ceiling of 3,000 ft or more. Only observations between sunrise and sunset are taken into account.

Marginal VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	98.5	99	99	99	94	99
February	98.6	100	99	100	99	100
March	98.7	97	99	98	99	99
April	99.1		100	98	100	100
May	98.9		100	99	99	99
June	98.6		99	99	99	100
July	98.5		97	98	99	99
August	99.1		100	99	100	98
September	93.8		99	98	99	98
October	98.3		100	99	100	96
November	99.1		100	99	99	99
December	98.0		100	96	98	99
Average	98.3	98.5	99.1	98.6	98.7	98.7

Marginal VFR conditions or better during daylight period

Percentage of observations where the MVFR minimums for ceiling and visibility are met: visibility of 5 km or more and a ceiling of 1,000 ft or more. Only observations between sunrise and sunset are taken into account.

Maximum temperatures (°C)

Month	Average	2024	2023	2022	2021	2020
January	30.8	31	31	30	30	31
February	30.7	31	31	31	30	31
March	31.4	33	31	31	31	32
April	32.0		33	31	32	32
May	32.4		33	32	32	33
June	31.9		33	31	32	32
July	32.1		32	32	33	32
August	32.3		33	32	32	33
September	31.9		32	31	31	32
October	31.5		32	31	32	31
November	31.6		32	32	31	31
December	31.2		32	31	31	31
Average	31.6	31.7	31.9	31.3	31.3	31.7

1st highest temperature of Brunei

Average highest temperature per day

The maximum temperature is typically observed some hours after noon.

Minimum temperatures (°C)

Month	Average	2024	2023	2022	2021	2020
January	24.7	26	24	25	25	26
February	25.0	26	24	25	25	26
March	25.0	26	25	24	25	26
April	25.2		25	25	25	26
May	25.4		26	25	25	26
June	25.0		25	25	25	25
July	24.7		25	25	25	25
August	24.6		25	25	24	24
September	24.7		25	24	24	25
October	24.7		25	24	25	25
November	24.7		25	25	24	25
December	24.8		25	24	25	25
Average	25.0	25.8	24.9	24.6	24.6	25.1

1st lowest temperature of Brunei

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	12.7	4	13	11	29	8
February	10.1	4	15	5	17	2
March	7.1	2	7	10	7	9
April	9.3		6	15	8	6
May	9.5		7	10	9	8
June	12.4		8	9	14	11
July	13.2		12	17	6	12
August	10.1		7	10	8	8
September	11.5		11	16	12	10
October	14.6		8	18	9	22
November	10.8		7	14	13	11
December	15.9		4	10	13	16
Average	10.6	3.0	8.6	12.1	12.0	10.1

Precipitation during daylight period

Percentage of observations with observed rain, drizzle, snow or hail. Only observations between sunrise and sunset are taken into account.

Wind speed (knots)

Month	Average	2024	2023	2022	2021	2020
January	5.7	6	5	6	6	6
February	6.4	7	6	6	7	8
March	5.9	7	7	6	6	5
April	5.4		6	6	6	5
May	5.2		6	5	6	5
June	5.2		5	6	5	5
July	5.5		6	6	6	5
August	5.7		6	6	6	6
September	5.6		6	6	6	6
October	5.8		6	7	6	6
November	5.3		5	5	5	6
December	5.3		6	5	5	6
Average	5.7	6.8	5.7	5.9	5.9	5.7

1st highest wind speed of Brunei

Average wind speed

Excluding wind gusts. Only observations between sunrise and sunset are taken into account.

Prevailing wind direction

Month	2024	2023	2022	2021	2020
January	355°	317°	345°	307°	014°
February	350°	354°	344°	347°	011°
March	342°	345°	299°	329°	331°
April		312°	260°	288°	314°
May		265°	279°	277°	296°
June		272°	264°	269°	265°
July		233°	264°	249°	270°
August		258°	264°	254°	266°
September		260°	263°	257°	252°
October		280°	235°	251°	239°
November		278°	273°	265°	257°
December		308°	274°	308°	248°

Prevailing wind direction

Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.