There was a big difference in the weather this weekend from last weekend, with temperatures dropping down to 15 degrees.
Temperatures of 25 ° C were recorded in parts of Wales on 30 and 31 May, but this weekend they struggled to exceed 10 ° C.
The outlook for this week is mixed and will remain uneasy, but temperatures are expected to rise.
Welsh meteorologist Derek Brockway said: “Mixed weather in the next week. Sunny intervals but also rain and showers.
“Sometimes heavy and thunderous. Warmer next weekend.”
The Met Office expects heavy rain for Wednesday, with an increase in the wind continuing towards Thursday.
BBC forecaster Chris Fawkes said: “It seems that the general pattern is that it will remain troubled by rain or storm showers and perhaps strong winds, but the daily details are still uncertain.”
He gave his predictions for the week ahead:
He said the week will begin with a “high pressure crest” and will be one of the “quietest” days on the weather front.
“There may be some showers in the southwest, but where the sun is shining we could see temperatures probably around 16 ° C,” he said.
In Wales, the Met Office added: “A cloudy and mostly dry start with the strange shower in the central areas during the day. Brighter in the afternoon with the best of the sun in the far west. Maximum temperature 16 ° C.”
Chris said the UK will begin to see a cold front approaching from the north west.
“We had a fair amount of dry weather in the morning,” he said.
“In the afternoon, however, we will begin to see that cold front enter. England and Wales should remain rather dry.”
The Met Office said for Wales: “Tuesday will be hot and dry with some bright or sunny spells.”
There is some uncertainty in the forecast after Tuesday and it will all depend on the flow of the jet.
Chris said: “The old computer model showed the flow of the jet with a ridge south of Iceland with a depression over the UK that would bring showers that would move through the then temperature that it would build to bring some of sunshine and a return of hot weather.
“However, the most recent computer executions show a larger ridge to the west of Iceland, which is more likely to dig into one of those low pressure areas across the UK and which is likely to develop on Wednesday.
“Once this has been developed, the runway is a little uncertain, but it could get quite slow when a high pressure area develops north and east, which would trap low pressure somewhere across Europe. western, which means that it is likely to remain unstable for quite some time.
“Wednesday, no place will be immune to seeing some rain, but it’s more likely to be in the north of the UK.”
The Met Office for Wales added: “It’s raining heavily on Wednesday, with winds getting stronger and colder.”
Chris said, “The low pressure area only develops on Wednesday, so there is an area of uncertainty where it goes next.”
The Met Office’s forecast for Wales at the moment is that there is wind with “rain to start”.