Station CSIM3 - Castle Island (NOS) 8444069 Image indicating link to RSS feed of recent meteorological observations for station CSIM3


Conditions at CSIM3 as of
(11:30 pm EDT on 04/20/2026)
0330 GMT on 04/21/2026:
     

Click on the graph icon in the table below to see a time series plot of the last five days of that observation.

5-day plot - Wind Direction Wind Direction (WDIR): N ( 360 deg true )
5-day plot - Wind Speed Wind Speed (WSPD): 11.1 kts
5-day plot - Wind Gust Wind Gust (GST): 13.0 kts
5-day plot - Air Temperature Air Temperature (ATMP): 41.5 °F
5-day plot - Dew Point Dew Point (DEWP): 23.5 °F
5-day plot - Wind Chill Wind Chill (CHILL): 34.5 °F
5-day plot - Wind Speed at 10 Meters Wind Speed at 10 meters (WSPD10M): 11.7 kts
5-day plot - Wind Speed at 20 Meters Wind Speed at 20 meters (WSPD20M): 11.7 kts
5-day plot -  Wind Speed, Wind Gust and Atmospheric Pressure Combined plot of Wind Speed, Gust, and Air Pressure
Previous observations
TIME
(EDT)
5-day plot - Wind Direction
WDIR
 
5-day plot - Wind Speed
WSPD
kts
5-day plot - Wind Gust
GST
kts
5-day plot - Wave Height
WVHT
ft
5-day plot - Dominant Wave Period
DPD
sec
5-day plot - Average Wave Period
APD
sec
5-day plot - Mean Wave Direction
MWD
 
5-day plot - Atmospheric Pressure
PRES
in
5-day plot - Pressure Tendency
PTDY
in
5-day plot - Air Temperature
ATMP
°F
5-day plot - Water Temperature
WTMP
°F
5-day plot - Dew Point
DEWP
°F
5-day plot - Salinity
SAL
psu
5-day plot - Visibility
VIS
nmi
5-day plot - Tide (above MLLW)
TIDE
ft
2026-04-20 11:24 pm N 11.1 14.0------ 41.5- 22.8---
2026-04-20 11:18 pmNNE 9.9 15.0------------
2026-04-20 11:12 pm NE 9.9 13.0------------
2026-04-20 11:06 pmENE 8.9 12.0------------
2026-04-20 11:00 pm NE 8.9 18.1------ 40.5- 24.8---
2026-04-20 10:54 pm N 13.0 19.0------ 41.0- 25.7---
2026-04-20 10:48 pm NE 8.0 9.9------------
2026-04-20 10:42 pm NE 8.9 9.9------------
2026-04-20 10:36 pm NE 7.0 8.9------------
2026-04-20 10:30 pmENE 8.0 11.1------ 40.8- 30.4---
2026-04-20 10:24 pmENE 8.9 11.1------ 40.8- 31.3---
2026-04-20 10:18 pm NE 8.0 12.0------------
2026-04-20 10:12 pm NE 9.9 11.1------------
2026-04-20 10:06 pm NE 9.9 12.0------------
2026-04-20 10:00 pm N 9.9 13.0------ 43.2- 24.8---
2026-04-20 09:54 pmNNW 2.9 11.1------ 42.8- 27.9---
2026-04-20 09:48 pmENE 8.9 14.0------------
2026-04-20 09:42 pm N 12.0 22.0------------
2026-04-20 09:36 pm N 11.1 15.0------------
2026-04-20 09:30 pmNNW 11.1 14.0------ 43.7- 25.9---
2026-04-20 09:24 pm N 8.9 13.0------ 43.9-----
2026-04-20 09:18 pm N 9.9 14.0------------
2026-04-20 09:12 pm N 9.9 14.0------------
2026-04-20 09:06 pm N 8.9 12.0------------
2026-04-20 09:00 pm N 7.0 8.9------ 43.9- 33.3---
2026-04-20 08:54 pm N 5.1 9.9------ 43.9- 32.7---
2026-04-20 08:48 pm N 5.1 7.0------------
2026-04-20 08:42 pm N 5.1 7.0------------
2026-04-20 08:36 pm NE 5.1 7.0------------
2026-04-20 08:30 pm NE 5.1 6.0------ 43.9- 33.3---
2026-04-20 08:24 pmENE 2.9 6.0------ 44.1- 32.5---
2026-04-20 08:18 pmENE 1.9 5.1------------
2026-04-20 08:12 pm E 2.9 5.1------------
2026-04-20 08:06 pm E 5.1 6.0------------
2026-04-20 08:00 pmENE 2.9 6.0------ 43.7- 35.1---
2026-04-20 07:54 pmESE 4.1 6.0------ 43.7- 34.5---
2026-04-20 07:30 pm E 8.9 12.0------ 43.3-----
2026-04-20 07:24 pm E 8.9 13.0------ 43.3-----
2026-04-20 07:18 pm E 8.9 13.0------------
2026-04-20 07:12 pm E 9.9 12.0------------
2026-04-20 07:06 pm E 9.9 11.1------------
2026-04-20 07:00 pm E 8.9 14.0------ 44.2-----
2026-04-20 06:54 pm N 9.9 19.0------ 46.4- 25.9---
2026-04-20 06:48 pmNNW 14.0 15.0------------
2026-04-20 06:42 pm N 12.0 17.1------------
2026-04-20 06:36 pm N 13.0 17.1------------
2026-04-20 06:30 pm N 12.0 17.1------ 46.6- 25.2---
2026-04-20 06:24 pm N 15.0 17.1------ 46.6- 23.5---
2026-04-20 06:18 pmNNW 15.0 17.1------------
2026-04-20 06:12 pmNNW 15.0 17.1------------
2026-04-20 06:06 pm N 12.0 14.0------------
2026-04-20 06:00 pm NW 8.9 12.0------ 47.7- 24.4---
2026-04-20 05:54 pm NW 8.0 11.1------ 47.5- 23.7---
2026-04-20 05:48 pm NW 9.9 14.0------------
2026-04-20 05:42 pm NW 8.9 13.0------------
2026-04-20 05:36 pmNNW 11.1 12.0------------
2026-04-20 05:30 pmNNW 9.9 13.0------ 47.5- 23.2---
2026-04-20 05:24 pmNNW 8.9 11.1------ 47.5- 23.4---
2026-04-20 05:18 pmNNW 8.9 12.0------------
2026-04-20 05:12 pm NW 8.0 13.0------------
2026-04-20 05:06 pmNNW 8.9 14.0------------
2026-04-20 05:00 pmNNW 13.0 15.0------ 47.3- 22.6---
2026-04-20 04:54 pmNNW 12.0 15.0------ 47.1- 23.5---
2026-04-20 04:48 pm N 12.0 17.1------------
2026-04-20 04:42 pmNNW 13.0 18.1------------
2026-04-20 04:36 pmNNW 15.0 18.1------------
2026-04-20 04:30 pmNNW 9.9 12.0------ 47.8- 26.4---
2026-04-20 04:24 pm W 8.0 17.1------ 49.8- 19.8---
2026-04-20 04:18 pmWNW 11.1 15.0------------
2026-04-20 04:12 pm W 8.0 11.1------------
2026-04-20 04:06 pm W 12.0 19.0------------
2026-04-20 04:00 pm W 7.0 17.1------ 49.6- 23.4---
2026-04-20 03:54 pm SW 8.9 13.0------ 49.3- 23.5---
2026-04-20 03:48 pm SW 8.9 13.0------------
2026-04-20 03:42 pm SW 8.9 12.0------------
2026-04-20 03:36 pm SW 8.0 14.0------------
2026-04-20 03:30 pm SW 11.1 15.9------ 47.3- 25.5---
2026-04-20 03:24 pm SW 8.0 11.1------ 48.0- 24.6---
2026-04-20 03:18 pmWNW 5.1 8.9------------
2026-04-20 03:12 pm W 9.9 15.9------------
2026-04-20 03:06 pm W 8.0 14.0------------
2026-04-20 03:00 pm NW 7.0 12.0------ 47.7- 27.1---
2026-04-20 02:54 pmWNW 5.1 8.9------ 47.8- 27.9---
2026-04-20 02:48 pmWNW 4.1 7.0------------
2026-04-20 02:42 pm W 6.0 11.1------------
2026-04-20 02:36 pmWNW 6.0 8.9------------
2026-04-20 02:30 pm W 5.1 14.0------ 47.5- 28.0---
2026-04-20 02:24 pm W 9.9 19.0------ 46.8- 27.9---
2026-04-20 02:18 pm W 9.9 17.1------------
2026-04-20 02:12 pm NW 12.0 15.9------------
2026-04-20 02:06 pmWNW 7.0 12.0------------
2026-04-20 02:00 pm NW 8.9 15.0------ 47.5- 28.4---
2026-04-20 01:54 pmWNW 8.0 15.0------ 47.7- 28.2---
2026-04-20 01:48 pmWNW 6.0 9.9------------
2026-04-20 01:42 pmWNW 6.0 12.0------------
2026-04-20 01:36 pmWNW 8.9 13.0------------
2026-04-20 01:30 pm NW 11.1 15.0------ 45.9- 28.4---
2026-04-20 01:24 pmWNW 11.1 15.0------ 46.8- 27.7---
2026-04-20 01:18 pmWNW 8.0 12.0------------
2026-04-20 01:12 pmWNW 8.9 15.0------------
2026-04-20 01:06 pm W 7.0 15.0------------
2026-04-20 01:00 pmWNW 8.9 12.0------ 46.9- 27.0---
2026-04-20 12:54 pm W 8.0 15.0------ 47.1- 26.4---
2026-04-20 12:48 pmWNW 8.0 14.0------------
2026-04-20 12:42 pm W 8.9 14.0------------
2026-04-20 12:36 pm NW 9.9 14.0------------
2026-04-20 12:30 pmWNW 8.9 11.1------------
2026-04-20 12:24 pmWNW 8.0 11.1------------
2026-04-20 12:18 pm W 7.0 9.9------------
2026-04-20 12:12 pm W 6.0 13.0------------
2026-04-20 12:06 pmWNW 6.0 12.0------------
2026-04-20 12:00 pmWNW 9.9 15.0------ 46.8- 27.7---
2026-04-20 11:54 am W 5.1 8.9------ 47.5- 27.3---
2026-04-20 11:48 amWNW 8.0 12.0------------
2026-04-20 11:42 amWNW 5.1 11.1------------
2026-04-20 11:36 am W 7.0 13.0------------
2026-04-20 11:30 amWNW 7.0 14.0------ 46.2- 28.0---
2026-04-20 11:24 amWNW 8.9 13.0------ 46.2- 27.9---
2026-04-20 11:18 amWNW 8.0 13.0------------
2026-04-20 11:12 amWNW 8.9 14.0------------
2026-04-20 11:06 am W 8.0 15.0------------
2026-04-20 11:00 am W 8.0 12.0------ 46.2- 27.3---
2026-04-20 10:54 am NW 11.1 13.0------ 45.0- 28.2---
2026-04-20 10:48 amWNW 8.0 12.0------------
2026-04-20 10:42 am W 5.1 11.1------------
2026-04-20 10:36 amWNW 5.1 8.0------------
2026-04-20 10:30 amWSW 2.9 8.0------ 46.2- 29.8---
2026-04-20 10:24 amWNW 5.1 8.9------ 45.0- 29.1---
2026-04-20 10:18 am W 5.1 8.9------------
2026-04-20 10:12 amWNW 7.0 9.9------------
2026-04-20 10:06 am W 6.0 11.1------------
2026-04-20 10:00 am W 8.0 13.0------ 44.2- 29.3---
2026-04-20 09:54 am W 5.1 11.1------ 44.1- 30.2---
2026-04-20 09:48 am W 2.9 12.0------------
2026-04-20 09:42 am W 7.0 9.9------------
2026-04-20 09:36 amWNW 8.0 12.0------------
2026-04-20 09:30 amWNW 8.0 13.0------ 42.8- 30.2---
2026-04-20 09:24 am W 7.0 15.0------ 42.8- 30.0---
2026-04-20 09:18 amWNW 6.0 11.1------------
2026-04-20 09:12 amWNW 8.0 14.0------------
2026-04-20 09:06 am W 8.9 14.0------------
2026-04-20 09:00 amWNW 8.9 13.0------ 42.1- 30.4---
2026-04-20 08:54 am W 8.0 12.0------ 41.7- 30.2---
2026-04-20 08:48 am W 7.0 9.9------------
2026-04-20 08:42 amWNW 9.9 15.0------------
2026-04-20 08:36 am W 8.9 14.0------------
2026-04-20 08:30 am W 9.9 15.9------ 40.6- 30.0---
2026-04-20 08:24 amWNW 8.0 14.0------ 40.6- 30.2---
2026-04-20 08:18 am W 8.9 15.0------------
2026-04-20 08:12 amWNW 9.9 15.0------------
2026-04-20 08:06 am W 6.0 11.1------------
2026-04-20 08:00 am W 7.0 12.0------ 40.3- 30.2---
2026-04-20 07:54 am W 8.0 14.0------ 39.9- 30.0---
2026-04-20 07:48 am W 6.0 9.9------------
2026-04-20 07:42 am W 4.1 8.9------------
2026-04-20 07:36 am W 5.1 9.9------------
2026-04-20 07:30 am W 6.0 8.9------ 38.7- 30.7---
2026-04-20 07:24 amWSW 4.1 6.0------ 38.5- 31.1---
2026-04-20 07:18 amWSW 4.1 7.0------------
2026-04-20 07:12 amWSW 5.1 8.0------------
2026-04-20 07:06 amWSW 4.1 9.9------------
2026-04-20 07:00 amWSW 5.1 8.9------ 37.4- 30.7---
2026-04-20 06:54 amWSW 5.1 8.0------ 37.0- 30.4---
2026-04-20 06:48 amWSW 4.1 7.0------------
2026-04-20 06:42 amWSW 5.1 8.9------------
2026-04-20 06:36 amWSW 5.1 7.0------------
2026-04-20 06:30 am SW 4.1 6.0------ 36.9- 30.6---
2026-04-20 06:24 amWSW 4.1 6.0------ 36.7- 30.2---
2026-04-20 06:18 am W 5.1 8.0------------
2026-04-20 06:12 amWSW 5.1 8.0------------
2026-04-20 06:06 amWSW 5.1 7.0------------
2026-04-20 06:00 amWSW 4.1 7.0------ 36.5- 30.2---
2026-04-20 05:54 amWSW 4.1 7.0------ 36.5- 30.0---
2026-04-20 05:48 amWSW 5.1 8.0------------
2026-04-20 05:42 amWSW 4.1 6.0------------
2026-04-20 05:36 amWSW 4.1 6.0------------
2026-04-20 05:30 amWSW 5.1 8.9------ 36.9- 30.2---
2026-04-20 05:24 am W 6.0 9.9------ 37.0- 30.2---
2026-04-20 05:18 am W 8.0 11.1------------
2026-04-20 05:12 am W 8.0 12.0------------
2026-04-20 05:06 am W 8.0 11.1------------
2026-04-20 05:00 am W 7.0 9.9------ 37.0- 30.4---
2026-04-20 04:54 am W 6.0 11.1------ 37.0- 30.6---
2026-04-20 04:48 am W 7.0 9.9------------
2026-04-20 04:42 amWSW 5.1 8.9------------
2026-04-20 04:36 amWSW 5.1 8.0------------
2026-04-20 04:30 amWSW 5.1 8.0------ 37.2- 31.1---
2026-04-20 04:24 amWSW 5.1 8.9------ 37.2- 31.1---
2026-04-20 04:18 amWSW 5.1 8.0------------
2026-04-20 04:12 amWSW 6.0 9.9------------
2026-04-20 04:06 am W 6.0 8.9------------
2026-04-20 04:00 am W 5.1 8.0------ 37.0- 31.3---
2026-04-20 03:54 am W 5.1 8.9------ 37.0- 31.5---
2026-04-20 03:48 am W 6.0 8.0------------
2026-04-20 03:42 am W 4.1 6.0------------
2026-04-20 03:36 amWSW 2.9 6.0------------
2026-04-20 03:30 amWSW 1.9 4.1------ 37.0- 32.0---
2026-04-20 03:24 amWSW 2.9 5.1------ 37.2- 32.0---
2026-04-20 03:18 amWSW 4.1 6.0------------
2026-04-20 03:12 amWSW 2.9 7.0------------
2026-04-20 03:06 amWSW 4.1 7.0------------
2026-04-20 03:00 amWSW 4.1 7.0------ 37.8- 32.5---
2026-04-20 02:54 amWSW 4.1 7.0------ 37.9- 32.5---
2026-04-20 02:48 amWSW 2.9 8.0------------
2026-04-20 02:42 amWSW 4.1 7.0------------
2026-04-20 02:36 amWSW 6.0 9.9------------
2026-04-20 02:30 amWSW 5.1 8.9------ 37.9- 32.9---
2026-04-20 02:24 am W 5.1 11.1------ 37.8- 32.9---
2026-04-20 02:18 am W 6.0 8.0------------
2026-04-20 02:12 amWSW 4.1 6.0------------
2026-04-20 02:06 amWSW 5.1 8.0------------
2026-04-20 02:00 am W 6.0 9.9------ 38.5- 33.3---
2026-04-20 01:54 am W 5.1 8.0------ 38.5- 33.3---
2026-04-20 01:48 amWSW 5.1 9.9------------
2026-04-20 01:42 am W 6.0 8.9------------
2026-04-20 01:36 amWSW 6.0 11.1------------
2026-04-20 01:30 amWSW 2.9 8.9------ 38.3- 33.8---
2026-04-20 01:24 amWSW 4.1 8.0------ 38.5- 33.8---
2026-04-20 01:18 amWSW 4.1 8.0------------
2026-04-20 01:12 amWSW 4.1 8.0------------
2026-04-20 01:06 amWSW 6.0 8.9------------
2026-04-20 01:00 amWSW 5.1 8.9------ 38.8- 34.0---
2026-04-20 12:54 am W 6.0 8.9------ 39.0- 34.0---
2026-04-20 12:48 am W 6.0 8.9------------
2026-04-20 12:42 am W 7.0 11.1------------
2026-04-20 12:36 amWSW 5.1 9.9------------
2026-04-20 12:30 amWSW 6.0 9.9------ 39.2- 34.2---
2026-04-20 12:24 am W 5.1 11.1------ 39.4- 34.2---
2026-04-20 12:18 am W 6.0 12.0------------
2026-04-20 12:12 am W 7.0 13.0------------
2026-04-20 12:06 am W 8.0 13.0------------
2026-04-20 12:00 amWSW 5.1 12.0------ 39.0- 34.3---
2026-04-19 11:54 pm W 6.0 8.9------ 38.7- 34.3---