Climate Neerlerit Inaat Airport 2021-2024

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

Calculated from historical METAR data of Grímsey Airport (BIGR) between 2021 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021
January	49.1	48	40	58
February	52.3	41	63	54
March	41.2	38	30	55	45
April	50.2		47	38	66
May	59.0		71	48	56
June	84.6		88	67	91
July	55.5		27	53	79
August	54.6		62	43	58
September	59.5		46	55	75
October	40.6		51	33	36
November	47.3		66	40	36
December	57.6		50	61	62
Average	49.6	41.4	50.2	47.9	58.9

12th best VFR conditions of Iceland

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
January	80.1	79	69	91
February	76.7	72	77	81
March	75.9	65	77	84	76
April	77.5		69	75	88
May	80.6		84	61	93
June	94.8		100	78	100
July	69.3		38	75	88
August	68.8		75	51	79
September	78.5		75	67	89
October	70.5		82	61	67
November	78.5		95	61	78
December	85.5		82	90	86
Average	75.0	70.7	75.2	70.8	83.2

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
January	0.5	0	0	1
February	0.8	0	3	0
March	0.2	1	-3	1	2
April	2.4		3	2	2
May	4.6		6	4	4
June	8.5		10	8	8
July	9.1		7	9	12
August	10.4		10	9	12
September	8.0		8	8	9
October	4.4		5	5	4
November	3.2		3	5	2
December	0.3		0	-1	2
Average	3.7	0.4	4.3	4.5	5.7

12th highest temperature of Iceland

Average highest temperature per day

The maximum temperature is typically observed some hours after noon.

Minimum temperatures (°C)

Month	Average	2024	2023	2022	2021
January	-1.2	-1	-1	-1
February	-1.4	-1	1	-2
March	-1.0	0	-4	0	1
April	1.0		2	1	1
May	2.9		4	3	2
June	6.7		8	6	6
July	7.6		6	7	10
August	9.1		9	8	11
September	6.5		7	6	7
October	3.2		4	3	3
November	2.1		2	4	0
December	-1.1		-2	-1	0
Average	2.3	-1.3	3.0	3.1	4.0

7th lowest temperature of Iceland

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month	Average	2024	2023	2022	2021
January	29.2	20	48	21
February	32.3	35	32	30
March	29.7	39	32	16	33
April	16.5		24	16	11
May	15.8		18	23	8
June	14.1		0	28	17
July	20.3		28	28	8
August	19.7		10	37	13
September	23.0		32	16	20
October	31.4		23	35	38
November	23.8		13	27	32
December	25.6		36	26	16
Average	25.6	33.3	25.2	24.6	19.4

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
January	17.2	15	20	17
February	16.4	14	16	19
March	16.1	17	17	13	17
April	11.9		11	12	13
May	11.5		11	14	10
June	10.5		12	8	11
July	9.6		11	11	8
August	9.8		8	12	10
September	12.6		14	11	13
October	15.7		17	15	15
November	15.2		14	17	14
December	13.0		16	10	13
Average	13.7	15.4	13.8	13.5	12.1

12th highest wind speed of Iceland

Average wind speed

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

Prevailing wind direction

Month	2024	2023	2022	2021
January	212°	020°	245°
February	007°	157°	089°
March	060°	060°	145°	331°
April		066°	061°	297°
May		268°	059°	077°
June		258°	141°	099°
July		031°	020°	017°
August		054°	002°	087°
September		067°	017°	348°
October		084°	021°	038°
November		103°	090°	032°
December		130°	025°	141°

Prevailing wind direction

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