Dry and Very Mild
Temperatures
The average maximum temperature during April 2025 in Shoreham was 17.3 Celsius (63F), and that was 3 Celsius (>5F) above average. Only 2 years, 2007 and 2011, have had higher average maxima, in records dating back to 1880. It was the sunniest April in England since records began in 1910, and this was a significant factor in the much higher than average day-time temperatures. The average minimum temperature was 7.1 Celsius (45F), and that was around 1 Celsius (<2F) above average.
The highest temperature recorded during the month was 24.8 Celsius (77F) on the 30th, but 23.9 Celsius (75F) was recorded on the 29th, and 23.2 Celsius (74F) occurred on the 4th. On most days (19) the maximum temperature ranged from 15 to 20 Celsius (59-68F) which was still above the long-term average. There were a few cooler days around the middle of the month and into the third week, but none of these days had maxima below 14 Celsius (57F). There were 2 more cooler days, and these occurred on the 9th and 10th with highs of 12.7 and 13.7 Celsius (55 and 57F) respectively.
After the sunny days there were many clear nights and this allowed plenty of cooling to occur. As a result, there were no particularly mild nights, although on 4 occasions the temperature remained above 10 Celsius (50F). The mildest night was the 4th with a low of 11.3 Celsius (52F), closely followed by the 19th when 11.2 Celsius (52F) was recorded. On the majority of nights (20) the minimum temperature ranged from 5 to 10 Celsius (41-50F), but several colder nights occurred, these mainly during the second and third weeks. Although 5 nights had minima below 4 Celsius (39F), only 2 of these colder nights had lows under 3 Celsius (37F). The 10th and 11th had lows 2.1 and 2.2 Celsius (36F) respectively.
The sea temperature steadily rose from around 9 Celsius (48F) at the beginning of April, to 13 Celsius (55F) at the end of the month.
Frost
No air frosts occurred during April. There were 2 very slight grass frosts. On both the 1st and 11th grass minima of minus 0.6 Celsius (31F) were recorded.
Rain
Rainfall during April amounted to 25.2 millimetres (1 inch), which was around 60% of the monthly average. Measurable rain fell on 7 days, which was 2 below normal for April, and wet days (when 1 millimetre (0.04 ins.), or more, of rain falls) only numbered 3, which was 3 days below the average. The first 11 days of April had no measurable rain, but light rain on the night of the 12th/13th brought to an end a 16-day dry spell. Only 0.4 millimetres (0.2 ins.) were recorded, but rain overnight on the 14th was somewhat heavier and amounted to 3.6 millimetres (0.14 ins.). Despite the 16th and 17th being dry, the weather remained rather changeable, although the highest rainfall total between the 18th and 21st was only 2.2 millimetres (0.09 ins.) on the 19th. However, on the night of the 22nd and 23rd there were spells of heavy rain. In fact almost three quarters of the monthly rainfall fell between midnight and 9 o’clock in the morning. The total was 18.2 millimetres (0.72 ins.). It was also the last measurable rain during April.
Hail
No hail was observed in this part of Shoreham.
Thunder
No thunder was heard in this part of Shoreham during April.
Snow
No sleet or snow occurred in this part of Shoreham.
Wind
The usual procession of weather fronts from the Atlantic did not occur again during April, a recurring feature of the last 3 months. The first and last weeks of the month were anticyclonic, but around the middle of the month the weather was more cyclonic.Half of the daily wind readings were from between north and east, and only quarter of the days had southwesterly winds. Most other winds blew from the southeast with northwesterlies entirely absent. Generally, winds were light, with the strongest breezes blowing from the northeast early in the month. At Shoreham Airport, gusts above 30 knots (34 mph) were uncommon. Northeasterly winds on the afternoon of the 2nd peaked at 31 knots (35 mph), and on the late evening of the 15th southwesterly winds gusted to 34 knots (39 mph). It stayed breezy into the early hours of the 16th when 33 knots (38 mph) occurred. An isolated gust to 31 knots (35 mph) from the east-southeast occurred on the morning of the 19th, and that was the last significant gust of the month.
Fog
No fog was observed in this part of Shoreham.
Statistics for April 2025
| Reporting Site | Highest Temp | Lowest Temp | Rain Total (mm) | Wettest | Rain days |
| Shoreham A/P | 23.0 | 0.8 | 22 | 16 | 6 |
| Thorney Island | 23.5 | 1.4 | 20 | 14 | 9 |
| Gatwick A/P | 23.7 | -0.9 | 18 | 9 | 4 |
| Herstmonceux | 25.9 | 1.6 | 34 | 20 | 7 |
| Bournemouth (Hurn) | 24.4 | -1.5 | 40 | 11 | 10 |
| Middle Wallop | 25.5 | 0.4 | 14 | 7 | 8 |
| Dieppe | 23.3 | 1.8 | 22 | 9 | 10 |