Climate Siwo Airport 2020-2024

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

Calculated from historical METAR data of Bauerfield International Airport (NVVV) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	57.1	39	56	61	68	69
February	57.7	39	69	58	74	58
March	60.8	53	72	69	65	52
April	63.1		64	70	61	64
May	67.6		70	64	65	73
June	62.0		73	68	69	47
July	60.3		58	61	56	60
August	56.0		54	66	66	43
September	59.6		53	67	61	58
October	53.0		41	52	65	60
November	61.5		39	76	70	68
December	61.2		55	80	65	59
Average	54.9	43.3	58.6	65.4	65.3	59.3

3rd best VFR conditions of Vanuatu

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	96.9	97	97	95	98	100
February	96.1	98	98	93	99	100
March	96.7	98	98	99	97	96
April	97.9		100	98	99	99
May	98.2		98	100	99	99
June	98.3		100	100	100	99
July	98.4		98	97	99	100
August	96.1		95	97	98	96
September	97.5		98	99	100	99
October	98.0		100	96	98	100
November	97.5		100	100	100	99
December	97.4		98	98	98	98
Average	95.4	97.5	98.1	97.2	98.4	98.4

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	29.6	31	31	31	31	30
February	30.0	31	30	30	31	31
March	29.5	30	30	30	30	30
April	28.9		30	30	30	29
May	27.7		29	29	28	28
June	26.6		27	28	28	27
July	26.0		26	28	28	26
August	26.0		25	28	27	27
September	27.0		27	29	27	27
October	27.7		28	28	29	28
November	28.8		28	31	30	30
December	29.8		30	31	31	30
Average	28.2	30.5	28.2	29.3	29.0	28.6

4th highest temperature of Vanuatu

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	22.7	23	23	23	23	21
February	23.1	24	23	20	23	21
March	22.7	25	23	23	23	22
April	22.1		22	23	23	21
May	20.8		22	21	20	18
June	19.9		18	21	19	22
July	19.4		19	22	20	19
August	19.1		19	21	19	20
September	19.2		20	20	19	19
October	21.2		21	21	22	20
November	21.2		20	23	20	21
December	22.4		23	22	23	22
Average	21.6	24.1	21.0	21.5	21.0	20.4

1st lowest temperature of Vanuatu

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	12.5	13	14	15	16	2
February	13.7	9	19	21	7	7
March	13.8	21	16	13	12	12
April	9.5		7	7	6	12
May	7.7		13	6	9	3
June	9.0		4	9	2	11
July	9.7		7	19	13	5
August	13.3		20	10	16	13
September	9.6		7	7	8	12
October	12.3		8	15	19	12
November	9.2		6	7	6	13
December	8.5		6	6	8	12
Average	13.1	14.4	10.5	11.4	10.3	9.2

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	6.5	6	6	5	6	10
February	7.6	8	6	7	8	9
March	7.5	7	8	6	8	8
April	7.3		6	6	7	8
May	8.5		8	8	8	8
June	8.4		8	7	8	11
July	8.6		10	7	8	9
August	9.5		10	9	11	8
September	10.0		10	8	10	11
October	9.2		11	8	7	9
November	8.4		10	5	7	9
December	7.7		10	5	6	8
Average	8.0	6.7	8.6	6.7	7.6	8.9

4th highest wind speed of Vanuatu

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	113°	227°	145°	174°	081°
February	139°	100°	317°	146°	071°
March	121°	104°	285°	113°	077°
April		149°	092°	134°	125°
May		125°	099°	140°	127°
June		124°	082°	129°	122°
July		119°	071°	125°	124°
August		119°	085°	124°	125°
September		123°	080°	132°	124°
October		112°	089°	082°	119°
November		122°	083°	098°	126°
December		117°	110°	091°	127°

Prevailing wind direction

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