Statistics Juan Santamaría International Airport 2019-2023

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

Calculated from historical METAR data of Juan Santamaría International Airport (MROC) between 2019 and 2023.

VFR conditions (%)

Month	Average	2023	2022	2021	2020	2019
January	99.1	98	100	99	100	100
February	99.6	100	100	100	100	99
March	99.2	96	100	100	100	100
April	95.7	96	91	94	96	100
May	90.5	94	82	95	92	90
June	87.1	88	77	89	87	96
July	92.4	88	86	93	92	97
August	90.0	92	86	85	85	94
September	84.8	85	77	82	83	90
October	81.5	70	79	84	85	85
November	87.3	82	82	94	72	94
December	98.4		100	98	96	99
Average	91.9	89.6	87.6	92.6	90.5	95.1

3rd best VFR conditions of Costa Rica

VFR conditions during daylight period

Percentage of observations where the VFR minimums for ceiling and visibility are met:

• Visibility: 8 km or more
• Ceiling: 3,000 ft or more

Only observations between sunrise and sunset are taken into account.

Marginal VFR conditions (%)

Month	Average	2023	2022	2021	2020	2019
January	99.5	100	100	100	100	100
February	99.6	100	100	100	100	99
March	99.6	99	100	100	100	100
April	98.0	98	96	98	98	100
May	96.9	99	92	99	98	97
June	96.0	97	91	96	96	99
July	97.4	97	95	98	99	98
August	96.7	97	94	97	94	99
September	95.1	94	92	95	95	96
October	94.4	93	92	97	95	97
November	96.0	95	94	99	90	98
December	99.4		100	100	99	100
Average	97.3	97.1	95.1	98.1	97.0	98.3

Marginal VFR conditions or better during daylight period

Percentage of observations where the MVFR minimums for ceiling and visibility are met:

• Visibility: 5 km or more
• Ceiling: 1,000 ft or more

Only observations between sunrise and sunset are taken into account.

Maximum temperatures (°C)

Month	Average	2023	2022	2021	2020	2019
January	27.7	28	28	28	28	28
February	28.6	28	28	29	29	29
March	29.1	28	29	29	30	29
April	29.2	29	28	28	30	30
May	27.9	30	27	28	28	28
June	27.3	28	26	27	27	28
July	27.6	29	27	27	28	28
August	27.4	28	27	27	27	28
September	27.2	29	27	27	27	27
October	26.2	27	26	27	26	26
November	26.6	27	26	27	25	27
December	27.3		27	28	27	28
Average	27.7	28.2	27.2	27.5	27.7	27.9

3rd highest temperature of Costa Rica

Average highest temperature per day

The maximum temperature is typically observed some hours after noon.

Minimum temperatures (°C)

Month	Average	2023	2022	2021	2020	2019
January	19.1	19	19	19	20	19
February	19.1	20	19	19	20	19
March	19.4	19	20	19	20	20
April	19.7	20	20	20	20	20
May	19.8	21	19	20	20	20
June	19.3	20	18	19	19	20
July	19.6	20	19	20	20	20
August	19.5	21	19	19	20	20
September	18.7	20	18	18	19	19
October	19.0	20	19	19	19	19
November	19.1	19	18	19	19	20
December	19.4		19	20	19	20
Average	19.3	19.7	18.8	19.3	19.5	19.6

2nd lowest temperature of Costa Rica

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month	Average	2023	2022	2021	2020	2019
January	1.0	1	0	1	2	0
February	0.2	0	0	1	0	0
March	1.8	6	3	1	0	1
April	5.7	1	11	10	7	2
May	11.2	7	15	9	9	15
June	10.9	12	16	8	14	7
July	10.7	9	14	13	9	10
August	9.1	11	9	11	9	8
September	11.5	11	13	10	12	10
October	14.0	18	14	9	15	11
November	10.6	12	14	6	17	8
December	2.1		0	1	4	4
Average	7.6	8.3	9.5	6.6	8.0	6.3

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	2023	2022	2021	2020	2019
January	12.9	12	12	12	13	15
February	14.1	16	14	12	15	13
March	13.0	10	12	13	14	15
April	9.6	11	8	9	9	11
May	7.3	9	6	8	8	7
June	6.9	7	6	7	7	9
July	8.2	9	7	8	8	9
August	7.5	8	7	7	8	8
September	6.8	8	6	7	7	7
October	6.4	6	6	7	6	6
November	7.8	7	6	9	7	9
December	11.4		11	11	11	10
Average	9.2	9.3	8.3	9.0	9.4	9.9

3rd highest wind speed of Costa Rica

Average wind speed

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

Prevailing wind direction

Month	2023	2022	2021	2020	2019
January	097°	100°	095°	091°	096°
February	091°	094°	105°	095°	101°
March	107°	103°	102°	095°	098°
April	113°	127°	113°	116°	112°
May	109°	233°	124°	143°	189°
June	202°	231°	199°	225°	116°
July	112°	132°	107°	142°	101°
August	135°	210°	202°	188°	119°
September	180°	247°	225°	231°	189°
October	245°	228°	236°	239°	238°
November	177°	206°	110°	236°	103°
December		096°	099°	105°	100°

Prevailing wind direction

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