Weather in Saint Croix Island

Calculated from weather data of Henry E Rohlsen Airport (TISX) between 2020 and 2024.

Maximum temperatures (°C)

Month	Average	2024	2023	2022	2021	2020
January	29.0	30.6	28.8	29.3	28.8	28.8
February	29.0	29.8	28.5	28.6	29.1	29.6
March	29.2	30.5	29.0	28.8	29.3	29.0
April	28.1	16.3	29.1	29.8	29.8	30.3
May	30.6		30.8	30.8	31.0	31.3
June	31.5		32.1	31.8	31.1	32.7
July	31.7		31.8	31.5	31.6	32.2
August	32.0		33.0	32.3	31.1	32.6
September	32.0		34.5	31.8	32.0	32.2
October	30.4		32.3	31.1	31.1	31.6
November	30.8		31.8	30.6	31.0	30.1
December	29.8		30.3	29.1	30.3	28.8
Average	30.0	26.8	31.0	30.5	30.5	30.8

25th highest temperature of United States

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	22.4	24	23	22	23	22
February	22.0	22	22	21	24	22
March	22.2	21	22	22	23	23
April	21.8	12	23	24	23	24
May	23.8		25	25	25	21
June	25.4		27	26	25	27
July	25.5		26	26	24	27
August	25.8		28	27	25	27
September	24.7		27	26	25	26
October	23.0		25	26	22	22
November	23.8		25	24	24	24
December	22.9		22	22	24	22
Average	23.2	19.8	24.4	24.1	23.7	23.7

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Cold and hot days

Number of days	2024	2023	2022	2021	2020
30 °C or warmer	62	224	203	218	219
25 °C or warmer	106	364	348	365	366
20 °C or warmer	107	365	349	365	366
0 °C or colder	0	0	0	0	0

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	3.5	5	4	3	5	4
February	3.6	5	5	4	2	5
March	2.5	4	2	3	1	5
April	4.0	11	4	4	2	3
May	3.1		2	2	3	3
June	2.9		3	0	4	4
July	3.8		7	2	2	4
August	5.4		6	4	5	7
September	7.4		4	17	2	6
October	5.4		7	5	5	6
November	6.5		6	10	3	5
December	3.8		5	2	1	6
Average	4.4	6.3	4.6	4.7	2.8	4.7

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 (km/h)

Month	Average	2024	2023	2022	2021	2020
January	19.9	21	20	20	19	19
February	21.6	16	24	21	27	22
March	21.0	19	21	25	23	20
April	21.4	20	20	25	21	19
May	21.9		19	24	23	21
June	23.0		22	24	24	22
July	24.9		24	32	26	24
August	21.8		21	21	21	22
September	17.8		18	20	17	16
October	16.2		15	18	18	18
November	18.4		18	19	19	20
December	19.5		19	15	23	19
Average	20.6	18.9	20.2	22.1	21.8	20.3

79th highest wind speed of United States

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	E	E	E	E	E
February	E	E	E	E	E
March	E	E	E	E	E
April	E	E	E	E	E
May		SE	E	E	E
June		E	E	E	E
July		E	E	E	E
August		E	E	E	E
September		E	E	E	E
October		E	E	E	E
November		E	E	E	E
December		E	NE	E	E

Prevailing wind direction

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

Saint Croix Island weather Q&A

What is the warmest month in Saint Croix Island?

The warmest month is September with an average temperature of 32 °C over the past years.

What is the coldest month in Saint Croix Island?

The coldest month is April with an average daytime temperature of 28 °C in the past few years.

Which month is the wettest in Saint Croix Island?

Chance of precipitation is the highest in September with a probability of around 7.4 %.

Which month is the driest in Saint Croix Island?

The least rainfall and snow can be expected in March. The probability is about 2.6 %.