Yorkshire have announced a post-tax deficit of £600,000 in their 2013 financial results - almost £500,000 more than the previous year.
The club, who lost £118,000 in 2012, have also reported a total income of £6.8 million compared to £7.8m in 2012, with 33 per cent of the former figure (£2.2m) coming in the form of international match revenue.
In 2012, the White Rose county took £3.1m in that area.
A Yorkshire statement explained: “The fall can be attributed to the fact that Headingley was allocated a May Test match against New Zealand in an Ashes year, with Test Matches between England and Australia taking place at grounds in very close proximity to the county.
“The inclement weather also played its part, which attributed to poor advance ticket sales, despite the club offering various incentives for early purchase.
“Unfortunately, day one of the Test was completely washed out, and therefore generated no walk-up income.
“The one-day international in September was also washed out without a ball being bowled.
“All tickets were sold well in advance of the match as the opposition and timing were highly attractive. Despite no play, the club retained all ticket revenue, and the ECB’s insurance refunded ticket holders.”
Commercial income (£1.6m) was also down by £150,000 on 2012, although Yorkshire hope to improve that figure by securing a naming rights partner for their Headingley stadium during 2014.
During the past 12 months, the club took on a further £3m of interest-bearing loans, but they repaid £1m of their loans and reduced their overdraft by the same amount.
The statement added: “The year ahead will hope to see an improvement in revenue.
“With the 2014 Test Match taking place a month later in June against competitive opposition, it is likely that there will be an increase in attendance and revenues on the previous 12 months.
“This is supported by the fact that the revamped NatWest T20 Blast season will expand from five to seven home matches.
“Five of the seven fixtures will be staged on Friday nights over a longer period in the season, which is expected to be beneficial from a spectator and financial perspective.”
Yorkshire’s international matches this summer are an England v Sri Lanka Test match, starting on Friday, June 20, and a one-day international between England and India on Saturday, September 20.