BWS Daily Climatology Written Summary

BWS Daily Climatology Table One

BWS Daily Climatology Table Two

BWS Daily Climatology Graphs

April 1 2018 to April 21 2018


(Compiled: Monday, April 23, 2018 06:13)

Written Summary   Table One   Table Two   Graphs  
Notes:
1. Mean daily temperature and pressure are averaged from the standard 24 hourly observations and not as the average of the maximum and minimum values.
2. Precipitation day has = or >0.01". Trace amounts (< 0.01") are not included in data.
3. Departures from the normal are based on the 1971 to 2000 normals where available (with the exception of the Sea Surface Temperature, which is based on the 1985 to 2000 normal).
Notes:
1. Mean humidity is averaged from the standard 24 hourly observations.
2. Weather Notes indicate a specific condition was observed at least once that day.
3. Departures from the normal are based on the 1971 to 2000 normals where available (with the exception of the Sea Surface Temperature, which is based on the 1985 to 2000 normal).
Key:
PN = Precipitation, PC = Partly Cloudy, MC = Mostly Cloudy, OV = Overcast, DZ = Drizzle, SH = Showers, BS = Blowing Spray GR = Hail, FC = Funnel Cloud, HZ = Haze, RA = Rain, BR = Mist, TS = Thunder Storm/Shower
Also see the BWS Glossary (http://www.weather.bm/glossary/Glossary.asp) for other abbreviations.
NOTE: To print graphs enable background printing in your browser print options.

A rather tranquil to start to April as high pressure builds in over Bermuda.


Last edited: Sunday, April 22, 2018

A dissipating frontal boundary produced extensive cloudiness on the 1st, but overall stable and dry with very light winds. The high peaked at 72F/22C while the low was 64F/18C. Calm to light winds continued on the 2nd among generally settled conditions. 9.3 hours of sunshine were recorded with a high of 73F/23C and a low of 62F/17C. The 3rd was dominated by stable high pressure which provided 9.2 hours of sunshine, light winds, a high of 73F/23C and a low of 64/18C. Wednesday the 4th was a fine spring day with 10.9 hours of sunshine and no rainfall. The high was 74F/23C and the low was 64F/18C. On Thursday the 5th a weak cold front brought 0.20" of rain and allowed only 4 hours of sunshine. The high was 74F/23C and the low fell to 62F/17C. In the wake of a departing front Friday the 6th was mainly fair. There was a trace of rainfall and 4.9 hours of sunshine with a high of 69F/20C and a low of 62F/17C. A ridge of high pressure provided mainly fair weather for Saturday the 7th. There was 7.5 hours of sunshine and only 0.01" of rain. The high was 73F/23C and the low was 65F/18c. A strong cold front on the 8th brought thunderstorms and a late day squall producing a peak gust to 71 knots along with 0.56" of rainfall. The high peaked at 75F/24C while the low was 64F/18C. The 9th saw a return to sunshine under high pressure to our northwest. We recorded 10.2 hours of sunshine, a high of 68F/20C, a low of 62F/16C while the winds were mainly moderate from the northwest. A warm front passed early on the 10th with 0.04" of rainfall. Otherwise, moderate to strong southerly winds ushered in low ceilings for much of the day and night with the high reaching 72F/22C and a low of 63F/17C. Low overcast conditions continued on the 11th as we saw moderate to strong southerly winds ahead of a cold front that passed through late in the evening. We observed thunder, 0.25" of rainfall and a peak wind of 37 knots with this front. The high topped out at 75F/24C while the low dipped to 64F/18C during a shower. Thursday the 12th was mainly fine and cool. There was 9.1 hours of sunshine with only 0.01" of rain. The high was 68F/20C while the low fell to 58F/15C. Friday the 13th was fine with 10.2 hours of sunshine and no rainfall. The high was 71F/22C and the low was 59F/15C. High pressure provided fine weather for Saturday 14th. There was 11.4 hours of sunshine and not a shower in sight. The high was 73F/23C and the low was 66F/19C. Sunday the 15th was another fine day with 12 hours of sunshine and no rainfall. The high was 73F/23C and the low 67F/20C. High pressure to our east provided another fine day on Monday the 16th. There was 10.2 hours of sunshine and no rain with a high of 74F/23C and a low of 68F/20C. A cold front crossed the island as an afternoon event on the 17th giving 0.45" of rainfall, after the 4.2 hours of sunshine in the morning. The high was 75F/24C and the low 66F/19C. The 18th was a dry and largely sunny day with 11.1 hours of sunshine recorded, along with a high of 72F/22C and a low of 66F/19C. Dry and sunny conditions continued on the 19th with 10.8 hours of sunshine recorded. The high was 75F/24C and the low was 66F/19C. Early morning on the 20th isolated thunderstorms crossed inside the eastern marine area as a stationary boundary intensified further east. A few light showers were in the area in the morning and again in the early evening as a weak cold front passed (only a trace of precipitation was recorded). Winds remained light to moderate throughout the day. There was 10.2 hours of sunshine with a high of 75F/24C and a low of 65F/18C. Settled conditions continued on Saturday the 21st with 9.4 hours of sunshine, light winds, a high of 68F/20C, and a low of 62F/17C.

Produced by the Bermuda Weather Service
Unless otherwise stated, all statistical data are based on observations taken at the Bermuda International Airport.
 Mean Temp.
(°C/°F)
Max Temp.
(°C/°F)
Min Temp.
(°C/°F)
Daily Precip.
Inches
Accumulated Precip.
Inches
Year To Date Precip.
Inches
Sea Surface Temp.
(C/F)
Mean
Sea Level Pressure
" Hg / hPa
Max
Sea Level Pressure
" Hg / hPa
Min
Sea Level Pressure
" Hg / hPa
Total   1.52      
Mean20.1 / 68.222.4 / 72.417.6 / 63.7   21.2 / 70.230.14 / 1021.0  
Departure
From Norm.
0.5 / 0.90.4 / 0.80.5 / 0.9-2.27  1.1 / 2.1   
Max21.5 / 70.724.1 / 75.4 0.56  22.1 / 71.830.35 / 1027.830.39 / 1029.1 
Min17.5 / 63.5 14.6 / 58.3   18.1 / 64.629.88 / 1011.9 29.79 / 1008.8
 Mean Temp.
(°C/°F)
Max Temp.
(°C/°F)
Min Temp.
(°C/°F)
Daily Precip.
Inches
Accumulated Precip.
Inches
Year To Date Precip.
Inches
Sea Surface Temp.
(C/F)
Mean
Sea Level Pressure
" Hg / hPa
Max
Sea Level Pressure
" Hg / hPa
Min
Sea Level Pressure
" Hg / hPa
4/1/201819.8 / 67.622.1 / 71.817.7 / 63.90.000.0014.2518.1 / 64.630.16 / 1021.330.20 / 1022.730.13 / 1020.3
4/2/201819.7 / 67.522.7 / 72.916.5 / 61.70.000.0014.2518.1 / 64.630.13 / 1020.330.16 / 1021.330.10 / 1019.3
4/3/201819.8 / 67.722.6 / 72.717.6 / 63.70.000.0014.2518.1 / 64.630.18 / 1022.030.21 / 1023.030.12 / 1020.0
4/4/201820.7 / 69.323.1 / 73.617.9 / 64.20.000.0014.2521.0 / 69.830.13 / 1020.330.20 / 1022.730.04 / 1017.3
4/5/201820.1 / 68.223.3 / 73.916.7 / 62.10.200.2014.4521.0 / 69.830.01 / 1016.330.09 / 1019.029.96 / 1014.6
4/6/201818.2 / 64.820.3 / 68.516.8 / 62.20.000.2014.4520.9 / 69.630.16 / 1021.330.22 / 1023.430.07 / 1018.3
4/7/201821.0 / 69.823.0 / 73.418.2 / 64.80.010.2114.4620.9 / 69.630.04 / 1017.330.12 / 1020.029.93 / 1013.5
4/8/201821.0 / 69.723.7 / 74.717.6 / 63.70.560.7715.0220.9 / 69.629.88 / 1011.929.98 / 1015.229.79 / 1008.8
4/9/201818.2 / 64.820.1 / 68.216.4 / 61.50.000.7715.0222.0 / 71.630.14 / 1020.730.25 / 1024.429.98 / 1015.2
4/10/201820.7 / 69.222.2 / 72.017.0 / 62.60.040.8115.0622.0 / 71.630.11 / 1019.630.18 / 1022.030.05 / 1017.6
4/11/201821.4 / 70.623.8 / 74.817.9 / 64.20.251.0615.3122.0 / 71.629.96 / 1014.630.04 / 1017.329.86 / 1011.2
4/12/201817.5 / 63.519.7 / 67.514.6 / 58.30.011.0715.3222.0 / 71.630.16 / 1021.330.25 / 1024.429.94 / 1013.9
4/13/201818.7 / 65.721.5 / 70.714.7 / 58.50.001.0715.3222.0 / 71.630.31 / 1026.430.36 / 1028.130.23 / 1023.7
4/14/201820.7 / 69.222.7 / 72.919.0 / 66.20.001.0715.3222.0 / 71.630.35 / 1027.830.38 / 1028.830.30 / 1026.1
4/15/201821.1 / 70.023.0 / 73.419.6 / 67.30.001.0715.3222.0 / 71.630.34 / 1027.430.39 / 1029.130.30 / 1026.1
4/16/201821.5 / 70.723.2 / 73.820.2 / 68.40.001.0715.3222.0 / 71.630.19 / 1022.430.30 / 1026.130.06 / 1017.9
4/17/201821.0 / 69.723.7 / 74.718.8 / 65.80.451.5215.7722.0 / 71.629.99 / 1015.630.06 / 1017.929.94 / 1013.9
4/18/201820.3 / 68.522.4 / 72.318.6 / 65.50.001.5215.7722.0 / 71.630.10 / 1019.330.15 / 1021.030.00 / 1015.9
4/19/201821.1 / 69.923.6 / 74.518.7 / 65.70.001.5215.7722.1 / 71.830.13 / 1020.330.17 / 1021.730.08 / 1018.6
4/20/201821.3 / 70.424.1 / 75.418.2 / 64.80.001.5215.7722.1 / 71.830.12 / 1020.030.19 / 1022.430.06 / 1017.9
4/21/201818.1 / 64.520.1 / 68.216.7 / 62.10.001.5215.7722.1 / 71.830.24 / 1024.030.29 / 1025.730.17 / 1021.7
 Hours Of
Sunshine
Mean
R.H.
%
Absolute
Max. R.H.
%
Absolute
Min. R.H.
%
Max Of
Mean Wind
knots / °
Peak
Wind
knots / °
Sky Conditions / Weather Notes
PN PC MC OV DZ SH RA GR TS FC HZ BS BR
Total164.2         
7181910093040001
Mean7.878.790.665.3      
             
Departure
From Norm.
          
-6            
Max12.0 99.0 40  71  
             
Min0.1  47.0      
             
 Hours Of
Sunshine
Mean
R.H.
%
Absolute
Max. R.H.
%
Absolute
Min. R.H.
%
Max Of
Mean Wind
knots / °
Peak
Wind
knots / °
Sky Conditions / Weather Notes
PN PC MC OV DZ SH RA GR TS FC HZ BS BR
4/1/20180.186.497659 / 08011 / 080
MCRA
VCSH
4/2/20189.383.698678 / 16010 / 160
PCMC
4/3/20189.284.596708 / 33012 / 010
PCMCOV
4/4/201810.982.4937116 / 19021 / 190
PCMC
PARTLY/MOSTLY SUNNY
4/5/2018487.9977024 / 27032 / 280
PNPCMCOVSH
VCSH WSHFT FROPA
4/6/20184.966.4845517 / 12026 / 080
PCMCOVSH
VCSH
4/7/20187.588.9948120 / 21024 / 200
PNPCMCOVSH
4/8/20185.287997040 / 25071 / 250
PNPCMCOVSHRATS
SQUAL
4/9/201810.266.1805713 / 34018 / 330
PCMCOVSH
VIRGA
4/10/20180.587.3967122 / 22027 / 210
PNMCOVSHRA
VCSH
4/11/20183.890.3978326 / 21037 / 260
PNMCOVSHTSBR
WSHFT
4/12/20189.164905119 / 33028 / 340
PNPCMCOVSH
4/13/201810.269.5805816 / 12020 / 120
PCMC
M SUNNY
4/14/201811.474.2846413 / 14017 / 150
PC
M SUNNY
4/15/20181280907012 / 17014 / 180
PC
4/16/201810.284.4937220 / 19024 / 190
PCMC
4/17/20184.284.7986826 / 20033 / 210
PNPCMCOVSHTS
WSHFT VCSH
4/18/201811.166.1805421 / 29026 / 290
PCMC
MOSTLY SUNNY
4/19/201810.878.5946319 / 20023 / 220
PCMC
PARTLY/MOSTLY SUNNY
4/20/201810.279.4926520 / 25026 / 240
PCMCTS
PARTLY/MOSTLY SUNNY, WSHFT
4/21/20189.460.1704713 / 36018 / 360
PCMC