April Summary
Feeling cooler with below average temperature and near average rainfall
- April was below my average temperature of 11.9C with 11.6C. There has not been an April with below average temperature since 2011 which had an average temperature of 11.2C
- The warmest temperature was 27.9C, my April record is 29.0C set in 2017
- The coldest temperature was 0.9C with a light frost, the lowest April temperature I've recorded is -1.7C in 2011.
- Twenty days reached or exceeded 15C, my average is 21.
- Three days reached or exceeded 20C, my average is 7.
- Two days reached or exceeded 25C, my average is 2.
- Wind run was 98% of my average of 3745km with 3657km.
- The windiest April was 2005 with 4696km.
- A new April wind speed record 0f 66lm/h from a southerly change on the afternoon of the 29th.
- The barometer recorded well above average pressure for the month with 1019.6hPa. My average is 1014.7hPa.
- Rainfall was 90% of the average expected total of 69mm with 62.2mm.
- The wettest April in my records was 2014 with 201mm.
- The driest April I've recorded is 2001 with just 4.5mm.
| April 2019 Summary Temperature | |
|---|---|
| Mean | 11.6 C |
| Mean Maximum | 16.7 C |
| Mean Minimum | 7.0 C |
| Maximum High | 27.9 C (10th) |
| Maximum Low | 13.0 C (10th) |
| Minimum High | 12.3 C (5th) |
| Minimum Low | 0.9 C (17th) |
| Wind Speed and Direction | |
| Maximum Gust | 66 km/h (29th) |
| Mean | 5.3 km/h |
| Wind Run | 3658 km |
| Max Daily Windrun | 310 km (29th) |
| Prevailing Direction | East North East |
| Barometer | |
| Maximum | 1040.0 hPa (18th) |
| Minimum | 987.9 hPa (29th) |
| Mean | 1019.6 hPa |
| Max Daily Change | `+25.6 hPa (29th) |
| Rainfall | |
| Days with Measured Rainfall (0.2mm or more) |
14 |
| Max Daily Rainfall | 20.4 mm (5th and 29th) |
| Monthly Rainfall | 62.2 mm |
| Humidity | |
| Maximum | 100 % (Several days) |
| Minimum | 27 % (1st) |
| April Daily Observations | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temperature | Wind | Rainfall | Barometer | |||||||||
| Date | Min | Max | Mean | Mean (Km/h) | Gust (Km/h) | Run (km) | Prevailing Dir | 10 Minute Max (mm) | Total (mm) | Min (hPa) | Max (hPa) | Change (hPa) |
| 1 | 11.7 | 26.5 | 19.9 | 12.0 | 50 | 273 | East Nth East | 1.8 | 3.6 | 995.0 | 1009.8 | +14.8 |
| Early rain clearing to a sunny day with winds turning warm northerly around midday. | ||||||||||||
| 2 | 7.3 | 14.8 | 10.9 | 4.0 | 33 | 92 | South Sth West | 0.8 | 1.8 | 1010.4 | 1029.7 | +19.3 |
| Showers clearing by midday to a sunny afternoon with southerly winds. | ||||||||||||
| 3 | 7.3 | 17.8 | 11.8 | 2.4 | 24 | 55 | East Nth East | 0.2 | 0.6 | 1027.5 | 1032.1 | -4.6 |
| Early morning showers clearing. Cloud breaking to a sunny afternoon with light NE winds. Second-hottest March another sign of climate change |
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| 4 | 7.2 | 18.4 | 12.7 | 5.2 | 34 | 118 | East Nth East | 0 | 0 | 1020.1 | 1027.3 | -7.2 |
| Sunny with thin high cloud, NE wind. | ||||||||||||
| 5 | 6.6 | 12.3 | 9.0 | 8.3 | 38 | 190 | West Nth West | 1.4 | 20.4 | 1024.8 | 1032.9 | +8.1 |
| Morning rain then showers in the afternoon, some with hail. Southerly winds turning westerly. | ||||||||||||
| 6 | 4.0 | 12.9 | 7.5 | 3.6 | 27 | 82 | South Sth West | 0.2 | 1.4 | 1027.8 | 1032.8 | -5.0 |
| Mostly cloudy with showers but some sunny intervals in the afternoon. Light southerly winds. | ||||||||||||
| 7 | 5.8 | 12.7 | 9.2 | 4.6 | 24 | 110 | South Sth West | 0 | 0 | 1025.3 | 1028.4 | -3.1 |
| Cloudy with a few sunny intervals Some drizzle and low cloud in the afternoon. | ||||||||||||
| 8 | 7.4 | 17.3 | 12.1 | 4.3 | 29 | 97 | East Nth East | 0.2 | 0.4 | 1018.8 | 1025.5 | -6.7 |
| Early drizzle clearing. Broken cloud, mostly sunny in the afternoon, NE wind. | ||||||||||||
| 9 | 8.3 | 17.4 | 13.0 | 6.8 | 31 | 155 | East Nth East | 0 | 0 | 1010.8 | 1018.8 | -8.0 |
| Few clouds, sunny with NE wind. 'Land of the short white cloud' - NZ glaciers' huge loss of ice in just 42 years |
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| 10 | 13.0 | 27.9 | 18.4 | 8.3 | 34 | 190 | East Nth East | 0 | 0 | 1002.1 | 1010.7 | -8.6 |
| Variable high cloud, Warm northerly winds from midday with a cooler southerly change in the evening. | ||||||||||||
| 11 | 10.3 | 13.8 | 12.1 | 6.5 | 27 | 149 | South West | 0.4 | 1.6 | 1003.9 | 1006.8 | +2.9 |
| Overcast with light rain and drizzle at times, southerly winds. Maximum temp recorded at midnight on the 11th min temp recorded at 11:50pm. | ||||||||||||
| 12 | 7.7 | 14.0 | 10.5 | 8.8 | 47 | 203 | South Sth West | 2.2 | 3.2 | 1006.5 | 1021.1 | +14.6 |
| Showers and cool fresh southerly winds easing in the evening | ||||||||||||
| 13 | 4.1 | 17.2 | 10.2 | 1.8 | 20 | 41 | South Sth West | 0 | 0 | 1017.4 | 1022.5 | -5.1 |
| Morning cloud breaking to a sunny day with light southerly winds turning NE in the afternoon | ||||||||||||
| 14 | 3.2 | 16.3 | 9.1 | 4.8 | 37 | 110 | South Sth West | 0.4 | 0.4 | 1018.2 | 1025.9 | +7.7 |
| Overcast from mid morning with light rain around midday, light southerly winds. | ||||||||||||
| 15 | 8.0 | 15.2 | 10.8 | 3.6 | 28 | 83 | South Sth West | 0.2 | 0.4 | 1025.3 | 1030.4 | +5.1 |
| Morning cloud clearing to a sunny afternoon with a cool southerly breeze. Clouding over in the evening with a few spots of rain. | ||||||||||||
| 16 | 4.1 | 15.2 | 10.3 | 4.6 | 26 | 104 | South Sth West | 0.2 | 1.4 | 1030.4 | 1037.0 | +6.6 |
| Showers in the morning. Cloud breaking in the afternoon. Cool southerly winds. | ||||||||||||
| 17 | 0.9 | 17.5 | 9.1 | 1.2 | 15 | 26 | East Nth East | 0 | 0 | 1036.4 | 1039.7 | +3.3 |
| Light frost, clear and sunny with light breezes tending NE. | ||||||||||||
| 18 | 3.0 | 15.2 | 9.8 | 3.9 | 27 | 90 | East Nth East | 0 | 0 | 1036.9 | 1040.0 | -3.1 |
| Cloud breaking in the afternoon a with light NE wind. | ||||||||||||
| 19 | 5.5 | 16.3 | 11.3 | 6.1 | 28 | 137 | East Nth East | 0 | 0 | 1026.5 | 1036.7 | -10.2 |
| Morning cloud breaking to a sunny afternoon with NE wind. | ||||||||||||
| 20 | 5.7 | 18.5 | 12.0 | 3.6 | 29 | 82 | East Nth East | 0.2 | 0.2 | 1015.2 | 1026.6 | -11.4 |
| Early fog clearing. Variable high cloud with sunny intervals, NE wind. Glaciers gone after record hot summers |
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| 21 | 10.2 | 14.5 | 12.1 | 6.6 | 25 | 151 | South Sth West | 0.2 | 1.8 | 1019.6 | 1026.5 | +6.9 |
| Overcast with morning showers clearing but showers returning in the evening. Lightning and rain for North Island in Easter weather washout |
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| 22 | 7.0 | 15.1 | 11.3 | 4.7 | 24 | 106 | South West | 0.4 | 4.4 | 1026.0 | 1028.4 | +2.4 |
| Light showers clearing about midday. Cloud breaking in the afternoon. Cool southerly wind. | ||||||||||||
| 23 | 7.7 | 15.9 | 12.2 | 4.9 | 31 | 112 | East Nth East | 0 | 0 | 1020.3 | 1028.4 | -8.1 |
| Some cloud but mostly sunny with cool Ne wind. | ||||||||||||
| 24 | 9.2 | 14.2 | 11.8 | 1.4 | 14 | 31 | West | 0 | 0 | 1019.1 | 1021.0 | -1.9 |
| Overcast with low cloud. light breezes tending westerly. | ||||||||||||
| 25 | 9.5 | 15.7 | 12.4 | 4.4 | 29 | 100 | East Nth East | 0 | 0 | 1004.9 | 1019.8 | -14.9 |
| Morning mist, fog and low cloud clearing to a sunny afternoon with NE winds. | ||||||||||||
| 26 | 7.5 | 16.9 | 12.4 | 6.2 | 34 | 140 | East Nth East | 0 | 0 | 1004.9 | 1012.6 | -7.7 |
| Some thin high cloud, sunny and mild afternoon with a NE wind. | ||||||||||||
| 27 | 9.8 | 24.7 | 17.4 | 6.5 | 37 | 150 | East Nth East | 0 | 0 | 996.6 | 1004.7 | -8.1 |
| Variable cloud with sunny intervals, Mild morning with NE winds turning nor'west in the afternoon with a few spots of rain. | ||||||||||||
| 28 | 7.4 | 19.1 | 12.6 | 4.3 | 28 | 97 | East Nth East | 0 | 0 | 992.9 | 1005.7 | -12.8 |
| High cloud increasing during the morning with north to NE winds. | ||||||||||||
| 29 | 7.3 | 13.4 | 10.3 | 13.6 | 66 | 310 | West | 2.2 | 20.4 | 987.9 | 1013.5 | +25.6 |
| Cloud increasing, westerly winds turning strong southerly with rain easing in the evening. Surface flooding affects nine roads in Christchurch, while power is out to more than 4000 homes |
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| 30 | 1.9 | 13.4 | 6.9 | 2.6 | 28 | 59 | South Sth West | 0.2 | 0.2 | 1013.6 | 1029.0 | +15.4 |
| Showers clearing by dawn, sunny with light southerly winds. | ||||||||||||
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