Climate Principe Airport 2020-2024

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

Calculated from historical METAR data of São Tomé International Airport (FPST) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	95.9	96	100	100	99	92
February	94.3	91	91	97	97	90
March	98.2	95	100	100	96	97
April	95.1	95	100	97	97	93
May	96.4		92	98	95	96
June	99.4		99	100	99	99
July	99.2		100	100	98	100
August	98.2		96	100	100	100
September	99.3		100	98	100	100
October	96.2		95	97	98	97
November	96.3		91	100	96	97
December	96.8		94	91	96	99
Average	96.7	93.3	96.3	98.0	97.5	95.8

1st best VFR conditions of Sao Tome and Principe

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	98.9	98	100	100	100	100
February	98.3	99	94	98	99	99
March	99.1	100	100	100	98	99
April	97.0	99	100	97	97	97
May	98.3		98	99	97	98
June	99.6		100	100	99	99
July	99.3		100	100	98	100
August	99.1		100	100	100	100
September	99.8		100	100	100	100
October	98.4		99	100	99	100
November	98.3		99	100	96	99
December	98.5		97	100	98	99
Average	98.8	98.6	98.7	99.3	98.3	99.1

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	30.5	31	29	30	30	32
February	30.6	31	30	30	30	31
March	31.1	32	30	29	31	31
April	30.2	31	28	28	31	31
May	29.8		30	29	30	31
June	28.9		30	27	29	28
July	28.2		28	27	29	28
August	28.5		29	28	29	27
September	29.1		30	27	29	29
October	29.1		29	28	29	29
November	29.0		28	28	29	30
December	29.4		29	28	29	30
Average	29.6	30.9	29.1	28.3	29.5	29.7

1st highest temperature of Sao Tome and Principe

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	23.8	25	24	25	24	22
February	24.7	26	24	25	26	25
March	25.0	26	26	26	26	25
April	25.3	26	28	26	25	26
May	25.1		25	26	25	26
June	24.5		24	25	25	25
July	23.4		24	24	24	25
August	23.4		24	27	24	24
September	24.1		25	26	24	24
October	24.6		25	25	25	25
November	24.8		25	26	26	26
December	24.6		25	25	24	25
Average	24.5	25.5	24.6	25.1	24.6	24.8

1st lowest temperature of Sao Tome and Principe

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	0.4	1	0	0	1	1
February	0.8	1	1	1	0	1
March	0.7	0	0	0	0	1
April	0.6	1	5	0	0	1
May	0.9		1	2	0	1
June	0.7		2	0	1	0
July	0.0		0	0	0	0
August	1.1		0	0	4	0
September	1.3		1	4	1	0
October	4.4		3	5	4	5
November	1.8		4	0	0	3
December	1.5		1	2	1	2
Average	1.1	0.8	0.9	0.9	0.9	1.1

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	5.9	6	5	7	5	7
February	6.3	7	5	5	7	6
March	6.9	7	9	5	7	7
April	7.6	8	6	5	8	8
May	8.0		9	8	7	7
June	9.7		11	8	8	8
July	9.2		11	9	9	7
August	8.6		10	7	9	7
September	7.9		8	8	8	7
October	7.3		7	7	9	7
November	7.0		6	7	7	7
December	6.1		5	6	6	7
Average	7.4	7.0	8.3	6.7	7.4	6.9

1st highest wind speed of Sao Tome and Principe

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	146°	106°	151°	133°	134°
February	156°	154°	150°	141°	140°
March	163°	166°	037°	155°	140°
April	150°	122°	184°	126°	146°
May		158°	161°	154°	147°
June		168°	160°	154°	160°
July		161°	161°	159°	157°
August		160°	347°	158°	132°
September		150°	131°	142°	105°
October		154°	163°	157°	136°
November		161°	156°	162°	152°
December		156°	158°	159°	155°

Prevailing wind direction

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