Climate Chhagalkhaiya BOP Heliport 2020-2024

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

Calculated from historical METAR data of Lengpui Airport (VELP) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	0.0	0	0	0	0	0
February	0.0	0	0	0	0	0
March	0.0	0	0	0	0	0
April	0.0		0	0	0	0
May	0.0		0	0	0	0
June	0.0		0	0	0	0
July	0.0		0	0	0	0
August	0.0		0	0	0	0
September	0.0		0	0	0	0
October	0.0		0	0	0	0
November	0.0		0	0	0	0
December	0.0		0	0	0	0
Average

47th best VFR conditions of India

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	42.9	42	52	31	27	20
February	36.2	13	35	19	22	38
March	30.6	24	27	25	4	37
April	35.4		20	4	5	47
May	43.8		44	17	18	52
June	31.0		28	13	22	34
July	38.2		59	39	23	19
August	28.4		17	31	10	20
September	43.8		51	33	41	15
October	33.8		19	53	29	11
November	53.1		58	82	32	43
December	44.4		66	45	38	31
Average	38.5	26.5	39.1	32.6	21.8	30.3

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	23.9	23	26	23	25	22
February	26.7	26	29	25	28	25
March	30.1	29	31	32	33	30
April	31.9		34	33	34	32
May	31.6		33	31	33	31
June	31.0		32	30	31	31
July	30.9		32	31	31	31
August	30.6		30	31	30	32
September	31.3		32	32	31	32
October	29.4		30	30	30	30
November	27.6		28	29	27	28
December	24.6		25	27	25	25
Average	28.7	25.8	30.0	29.6	29.8	28.9

67th highest temperature of India

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	13.5	12	14	16	12	12
February	15.1	14	17	15	15	12
March	19.9	17	19	21	21	19
April	23.4		24	25	23	21
May	25.0		26	25	25	24
June	26.1		26	26	26	25
July	26.5		27	26	27	25
August	26.4		26	26	27	25
September	26.0		26	26	26	25
October	24.7		24	25	27	24
November	20.7		21	22	22	18
December	16.2		17	19	19	13
Average	21.1	14.5	22.2	22.7	22.3	20.1

40th lowest temperature of India

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	0.8	0	0	4	0	2
February	1.3	1	0	0	0	3
March	1.3	2	2	1	0	0
April	1.0		0	1	1	2
May	3.8		4	5	1	4
June	8.0		7	11	7	6
July	11.8		4	7	6	13
August	9.3		13	5	7	5
September	5.2		4	3	1	3
October	6.8		7	4	2	6
November	3.0		6	0	7	0
December	2.8		2	0	5	0
Average	4.1	1.1	4.1	3.4	2.8	3.7

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	3.0	3	3	3	3	3
February	3.8	4	4	5	3	4
March	4.4	3	4	5	5	4
April	4.8		5	6	4	5
May	4.6		4	5	4	4
June	4.4		5	5	5	4
July	3.6		4	3	4	4
August	3.5		4	3	4	4
September	3.2		3	4	4	3
October	2.7		3	4	3	2
November	2.5		3	3	3	3
December	2.7		2	3	3	3
Average	3.6	3.2	3.6	4.0	3.7	3.5

67th highest wind speed of India

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	017°	056°	080°	086°	040°
February	037°	110°	111°	024°	093°
March	021°	009°	053°	080°	032°
April		327°	194°	066°	184°
May		310°	158°	073°	161°
June		072°	176°	149°	166°
July		066°	021°	081°	158°
August		047°	013°	115°	140°
September		006°	043°	013°	100°
October		008°	120°	017°	016°
November		353°	108°	030°	050°
December		352°	041°	032°	039°

Prevailing wind direction

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