Climate Santarém - Maestro Wilson Fonseca International Airport 2020-2024

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

Calculated from historical METAR data of Santarém - Maestro Wilson Fonseca International Airport (SBSN) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	91.4	88	92	91	94	93
February	90.6	93	91	89	93	90
March	91.1	85	93	89	91	95
April	92.8		93	92	92	93
May	94.9		92	91	98	96
June	95.8		96	96	98	94
July	97.6		98	98	95	100
August	99.0		100	99	100	96
September	99.3		99	99	99	100
October	97.7		91	98	97	100
November	88.7		41	96	96	97
December	93.8		98	97	97	96
Average	93.8	88.7	90.4	94.4	95.9	95.7

4th best VFR conditions of Brazil

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	97.6	95	97	97	99	100
February	96.6	99	97	95	98	97
March	97.5	96	99	96	97	98
April	97.8		98	98	98	98
May	98.4		97	98	100	99
June	99.3		99	99	100	99
July	99.4		100	99	98	100
August	99.8		100	100	100	100
September	99.8		100	100	100	100
October	99.7		100	100	98	100
November	95.4		70	100	100	100
December	99.0		100	99	99	100
Average	98.1	96.4	96.4	98.2	98.9	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	29.9	31	30	29	30	30
February	29.7	31	30	29	30	30
March	29.7	31	29	29	29	30
April	29.7		30	29	30	30
May	29.9		30	29	30	30
June	28.4		30	30	30	22
July	30.6		31	30	30	31
August	31.5		33	31	31	30
September	32.7		34	33	32	33
October	32.9		35	32	32	33
November	32.1		34	31	31	31
December	31.0		33	31	30	31
Average	30.7	31.0	31.4	30.3	30.4	30.1

36th highest temperature of Brazil

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	22.9	25	23	24	22	24
February	22.9	25	24	23	24	24
March	23.2	25	24	24	23	24
April	22.3		24	24	23	24
May	22.7		24	24	23	24
June	20.8		23	23	23	16
July	22.1		23	23	23	22
August	22.5		24	23	23	19
September	23.9		26	24	22	24
October	24.6		26	24	24	25
November	24.0		25	24	24	24
December	23.3		26	24	24	22
Average	23.1	24.8	24.3	23.5	23.1	22.6

97th lowest temperature of Brazil

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	7.9	7	9	18	6	3
February	9.2	7	7	9	7	13
March	9.6	11	8	13	12	6
April	7.4		6	4	6	11
May	5.4		7	7	2	5
June	3.1		2	3	4	3
July	1.2		1	2	3	0
August	0.5		0	1	0	2
September	0.1		0	0	0	0
October	0.5		0	1	1	0
November	2.0		1	2	4	2
December	3.2		1	1	3	2
Average	4.7	8.1	3.4	5.2	3.9	3.8

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	6.3	7	6	6	6	6
February	6.1	8	6	6	7	6
March	6.0	7	6	6	6	6
April	5.6		6	6	6	5
May	6.1		6	6	6	6
June	5.6		7	6	6	4
July	6.6		8	7	6	7
August	8.0		10	8	7	6
September	9.2		11	10	9	9
October	8.6		10	9	8	9
November	7.8		10	7	6	7
December	7.3		9	8	7	7
Average	6.9	7.2	8.0	7.1	6.6	6.5

36th highest wind speed of Brazil

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	085°	083°	087°	098°	095°
February	087°	083°	090°	096°	093°
March	089°	087°	088°	096°	094°
April		083°	083°	091°	085°
May		087°	085°	090°	096°
June		085°	084°	092°	093°
July		086°	081°	089°	093°
August		087°	083°	094°	091°
September		090°	089°	102°	095°
October		093°	090°	100°	097°
November		095°	083°	089°	099°
December		092°	085°	088°	098°

Prevailing wind direction

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