Climate Asau Airport 2020-2024

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

Calculated from historical METAR data of Faleolo International Airport (NSFA) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	90.1	94	87	90	86	94
February	91.7	95	79	91	96	91
March	89.6	89	92	78	86	98
April	92.3		96	93	92	96
May	88.6		89	88	81	88
June	91.4		92	94	87	86
July	90.6		96	85	89	91
August	90.6		93	94	84	84
September	88.0		86	82	78	93
October	88.1		77	85	87	93
November	89.9		90	87	82	96
December	91.9		92	95	88	90
Average	90.8	92.4	88.8	88.4	86.2	91.9

1st best VFR conditions of Samoa

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	97	100	99	97
February	98.3	100	93	99	100	99
March	99.4	100	100	98	99	100
April	99.6		100	100	100	100
May	98.9		96	100	99	96
June	98.9		97	100	99	99
July	99.7		100	100	100	100
August	99.4		100	100	100	99
September	99.5		100	99	99	99
October	99.3		99	100	98	100
November	98.9		99	98	99	100
December	99.3		100	100	99	100
Average	99.2	99.8	98.3	99.4	99.2	99.2

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	31.6	33	32	32	32	31
February	31.3	32	32	32	31	30
March	32.1	34	33	33	32	31
April	31.9		33	33	33	32
May	31.6		33	32	32	32
June	31.3		33	32	32	31
July	30.7		32	31	31	30
August	30.8		32	31	31	31
September	31.4		32	32	32	32
October	31.1		32	32	32	31
November	31.6		32	32	32	32
December	31.4		32	32	32	31
Average	31.5	32.7	32.0	31.9	31.8	31.0

1st highest temperature of Samoa

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	22.6	26	24	25	24	15
February	22.5	26	24	20	24	15
March	23.9	26	23	23	21	27
April	22.1		22	23	23	17
May	22.3		19	23	23	22
June	22.3		23	21	22	19
July	21.8		22	22	22	17
August	22.3		23	22	23	21
September	21.8		23	21	22	16
October	22.5		24	23	22	21
November	22.2		24	23	23	21
December	20.7		23	24	22	20
Average	22.6	25.6	22.7	22.3	22.5	19.1

1st lowest temperature of Samoa

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	8.9	7	11	6	12	24
February	14.3	18	16	6	18	19
March	2.0	3	2	2	3	2
April	2.3		2	1	1	4
May	6.1		7	5	2	2
June	1.9		1	3	1	3
July	4.2		7	4	3	9
August	3.3		4	3	4	1
September	2.1		1	1	0	5
October	4.9		6	6	3	6
November	4.4		4	4	4	8
December	7.4		5	7	6	12
Average	5.8	9.0	5.4	3.9	4.5	7.7

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	6.9	5	8	9	8	8
February	7.5	6	8	9	8	6
March	5.8	6	6	7	6	6
April	5.4		5	6	5	7
May	5.4		5	5	5	6
June	5.7		5	5	6	6
July	5.4		4	5	6	5
August	6.2		5	7	7	7
September	6.6		5	8	8	6
October	6.5		5	8	7	7
November	5.5		5	6	6	5
December	6.1		5	6	7	8
Average	6.1	5.5	5.4	6.7	6.4	6.4

1st highest wind speed of Samoa

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	021°	010°	011°	034°	007°
February	231°	045°	029°	022°	013°
March	036°	360°	044°	051°	040°
April		037°	049°	049°	047°
May		053°	062°	055°	063°
June		047°	061°	062°	082°
July		077°	064°	062°	117°
August		049°	055°	053°	068°
September		028°	055°	052°	050°
October		039°	045°	054°	054°
November		036°	039°	046°	032°
December		034°	011°	046°	027°

Prevailing wind direction

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